Welsh Grammar

The main Welsh personal pronouns are fi, ti, fe/fo, hi, ni, chi, and nhw. Welsh distinguishes informal singular ti from chi, which means either formal singular “you” or plural “you”; forms for “he” also vary by region. You will usually meet these pronouns immediately after a form of bod (“to be”), as in Dw i'n barod (“I am ready”) and Mae hi'n dod (“She is coming”).

Welsh often changes the first consonant of a word because of the grammar around it. In the soft mutation (treiglad meddal), nine initials can change: p→b, t→d, c→g, b→f, d→dd, g disappears, m→f, ll→l, rh→r. Learn the changes first, then attach them to high-frequency patterns such as dy dad “your father,” i Gaerdydd “to Cardiff,” and y ferch “the girl.”

Welsh nasal mutation changes the first consonant of a word in six regular ways: p→mh, t→nh, c→ngh, b→m, d→n, g→ng. At beginner level, learn it with two main triggers: fy “my” (fy mhen i, “my head”) and the preposition yn “in” (yng Nghaerdydd, “in Cardiff”). Only the beginning of the following word changes.

The Welsh aspirate mutation (treiglad llaes) changes only three initial consonants: p → ph, t → th, and c → ch. At beginner level, learn these changes after ei “her,” â “with,” tri “three,” and chwe “six”: ci “dog” becomes ei chi “her dog,” for example. Words beginning with other letters do not undergo this mutation.

Welsh has one definite article, meaning “the”, with three forms: y before most consonants, yr before vowels and h, and 'r after a word ending in a vowel. Thus, “the dog” is y ci, “the school” is yr ysgol, and “the children are playing” is mae'r plant yn chwarae. Welsh has no ordinary equivalent of English a/an: ci can mean “a dog,” while un ci specifically means “one dog.”

Every Welsh noun is grammatically masculine or feminine. The most important beginner pattern is that the definite article y/yr/'r causes a soft mutation in many feminine singular nouns: merch “girl” becomes y ferch “the girl,” while masculine bachgen stays y bachgen. Gender also affects adjectives, pronouns, some numbers, and demonstratives, so learn a noun together with its gender.

Welsh has no single plural ending equivalent to English -s. A noun (a word for a person, place, thing, or idea) may take an ending such as -au, -iau, -oedd, -i, or -od, change a vowel, or use a completely different-looking form: cath → cathod, ci → cŵn, plentyn → plant. The safest beginner habit is to learn every common noun as a pair: singular + plural.

Welsh uses the present tense of bod (“to be”) both to say what someone or something is and to build most everyday present-tense verbs. The core pattern is a form such as dw i, mae hi or maen nhw, followed by yn (usually shortened to 'n) and an adjective, noun or verb-noun: Dw i'n hapus (“I am happy”); Dw i'n gweithio (“I work/I am working”).

In everyday Welsh, put ddim after the subject to make a sentence negative: Dw i ddim yn deall (“I don’t understand”). For a yes/no question, use a question form of bod (“to be”), such as Wyt ti…? or Ydy hi…? Welsh normally answers by repeating the appropriate verb form—Ydw or Nac ydw, for example—rather than relying on one universal pair equivalent to English “yes” and “no.”

Welsh adjectives usually come after the noun: ci mawr means “a big dog,” literally “dog big.” After a feminine singular noun, an adjective normally undergoes soft mutation, so bach becomes fach in cath fach (“a small cat”). A few very common adjectives, including hen, prif, and hoff, come before the noun instead.

Welsh prepositions express relationships such as to, from, in, on, with and under, but the word after them may change its first consonant. Learn the preposition together with its mutation: i Gaerdydd “to Cardiff”, o Gymru “from Wales” and yng Nghymru “in Wales”. When an article comes next, learn the whole phrase as a unit: ar y bwrdd “on the table” and yn yr ysgol “in/at school”.

Modern Welsh builds numbers from 11 to 99 with a regular decimal pattern: tri deg pump is “thirty-five” (literally “three ten five”). Before a noun, however, you must also watch its gender and initial sound: dau gi means “two dogs,” dwy gath means “two cats,” and the noun normally stays singular.

For whole hours, Welsh uses Mae hi'n + number + o'r gloch: Mae hi'n dri o'r gloch means “It is three o'clock.” Use wedi for minutes past and i for minutes to; put dydd before a weekday and often mis before a month. The essential day words are heddiw “today,” yfory “tomorrow,” and ddoe “yesterday.”

A Welsh verb-noun (berfenw) is the basic dictionary form of a verb, such as darllen “to read,” bwyta “to eat,” or mynd “to go.” In the most useful beginner pattern, a form of bod “to be” is followed by yn and a verb-noun: Dw i'n darllen can mean “I am reading” or “I read.” The verb-noun stays the same; the form of bod shows who is acting and helps locate the action in time.

Welsh does not normally use a direct equivalent of the English verb have. Instead, it says that something “is with” a person: Mae gen i gar in a common northern pattern, or Mae car gyda fi in a common southern pattern, both meaning “I have a car.” To say my car, your car, or his/her car, Welsh uses forms such as fy nghar i, dy gar di, and ei gar e / ei char hi; the change at the start of the noun is part of the pattern.

A small set of Welsh expressions lets you greet someone, introduce yourself, be polite, and ask for help straight away. Learn common phrases such as Bore da (“Good morning”), Alex ydw i (“I’m Alex”), diolch (“thank you”), and Sut dych chi? (“How are you?”) as complete chunks. From the beginning, notice the contrast between informal singular ti and polite or plural chi.

Welsh usually expresses can, must, and want with a phrase rather than with a single auxiliary like English can or must. The essential patterns are dw i'n gallu + verb-noun (“I can…”), (mae) rhaid i fi + verb-noun (“I must…”), and dw i eisiau + noun or verb-noun (“I want…”). Notice that gallu and gorfod take yn, but eisiau normally does not.

Welsh normally puts the question word first: beth “what,” pwy “who,” ble/lle “where,” pryd “when,” sut “how,” pam “why,” and faint “how much/many.” Keep the rest of the Welsh question pattern after it: Ble dych chi’n byw? means “Where do you live?” Some question patterns use a special verb form such as sy, and some show soft mutation, so it is best to learn whole question frames rather than isolated words.

Welsh adverbs tell you where, when, how often, or how something happens: yma “here,” heddiw “today,” bob dydd “every day,” and yn dda “well.” Many adverbs of manner use yn + adjective, usually with soft mutation: cyflym “quick/fast” becomes yn gyflym “quickly.” In a neutral sentence, the adverb often follows the action or its object.

Use a present form of bod (“to be”) + yn + hoffi or licio to say that someone likes something: Dw i'n hoffi coffi (“I like coffee”). Put ddim before yn for “do not like,” use caru and casáu for the stronger ideas “love” and “hate,” and use Mae'n well gen i... for “I prefer....”

Welsh normally talks about the weather with mae hi'n followed by an adjective or a weather action: Mae hi'n oer (“It's cold”) and Mae hi'n bwrw glaw (“It's raining”). The pronoun hi literally means “she”, but in this pattern it is the conventional weather “it”. Use Ydy hi'n ...? for a question and Dyw hi ddim yn ... for a negative.

Start with a small set of useful nouns—bara (bread), caws (cheese), llaeth (milk), and dŵr (water)—and put them into reusable phrases. To order politely, say Ga i ... os gwelwch yn dda? (“May I have ... please?”). Expect the first letter of a word to change in combinations such as a chaws (“and cheese”), o de (“of tea”), and yn flasus (“tasty”).

Welsh family words often change their first consonant after words such as fy “my” and dy “your”: tad becomes fy nhad i “my father” but dy dad di “your father.” Learn each relationship word with its gender, plural, and one possessive phrase; this also prepares you for patterns such as dau frawd “two brothers” and dwy chwaer “two sisters.”

Welsh commonly expresses this/these + noun as y + noun + yma, and that/those + noun as y + noun + yna: y llyfr yma “this book”, y llyfrau yma “these books”. When the pointing word stands alone, Welsh distinguishes masculine hwn, feminine hon, and general or abstract hyn; common “that” forms include hwnna, honna, and hynna.

To describe a habit in everyday Welsh, use a present form of bod (“to be”), followed by yn and a verb-noun (the basic dictionary form of a Welsh verb): Dw i'n cerdded can mean “I walk” as well as “I am walking.” A phrase such as bob dydd (“every day”), fel arfer (“usually”), or weithiau (“sometimes”) makes the habitual meaning clear: Dw i'n cerdded bob dydd means “I walk every day.”

To say where someone or something is, Welsh normally puts a present-tense form of bod (“to be”) first, followed by the person or thing and a place expression: Mae'r siop yn y dref (“The shop is in town”). Ask Ble mae'r siop? (“Where is the shop?”). Do not add the linking 'n before a location preposition: Mae hi yn yr ysgol, not Mae hi'n yn yr ysgol.

Use bod + yn gallu + verb-noun for ability: Dw i'n gallu nofio means “I can swim.” For inability, use ddim yn gallu or methu: Dw i ddim yn gallu dod and Dw i'n methu dod both mean “I can't come.” When “Can I...?” asks for permission rather than ability, use Ga i...?: Ga i fynd? means “May I go?”

Welsh colour adjectives normally come after the noun: car coch means “a red car.” After a feminine singular noun, a colour beginning with a consonant that can undergo soft mutation usually changes its first sound: cath ddu means “a black cat,” from du. Learn the basic colour and its common mutated form together.

Welsh does not use one direct equivalent of English have for every health problem. Learn common symptoms as whole patterns: Mae pen tost gyda fi or Mae gen i ben tost (“I have a headache”), Mae annwyd arna i (“I have a cold”), and Mae fy nghoes i'n brifo (“My leg hurts”). For a general state, use bod (“to be”): Dw i'n sâl means “I am ill.”

Welsh compound prepositions are multi-word expressions that do the job of one English preposition: wrth ymyl “next to,” o flaen “in front of,” y tu ôl i “behind,” ar ben “on top of,” and o gwmpas “around.” Learn each expression as a complete unit, including any mutation already inside it: blaen becomes flaen in o flaen, for example. Put the expression before the place or object: Mae'r caffi wrth ymyl y siop means “The café is next to the shop.”

Use the imperfect of bod (“to be”) for a state, situation, or action that was ongoing or repeated in the past. Its basic pattern is roedd + subject + yn + description or verb-noun: Roedd hi'n hapus means “She was happy,” while Roedd hi'n gweithio can mean “She was working” or “She used to work.”

For a completed past action, spoken Welsh commonly uses a past form of gwneud (“to do”) as a helper verb, followed by the subject and a verb-noun: Wnes i ddarllen (“I read”). The main verb normally undergoes soft mutation in statements and questions, but after negative ddim it stays in its basic form: Wnes i ddim darllen (“I didn’t read”). Unlike English “did,” this helper is completely ordinary in positive statements too.

Many Welsh prepositions change form when their object is a pronoun: ar y bwrdd means “on the table,” but arna i means “on me” and arnyn nhw means “on them.” Learn each preposition with its personal forms rather than simply putting fi, ti, fe/fo, hi, ni, chi, nhw after the basic preposition. These forms also occur in everyday expressions such as Mae arna i eisiau coffi (“I want coffee”) and Mae gen i gar (“I have a car”).

To say “the person who is…” or “the thing that does…”, Welsh commonly uses sy or sydd. Before yn, the usual form is sy'n: y dyn sy'n gweithio yma (“the man who works here”). In this pattern, sy/sydd replaces mae; it does not come before it.

Use a/ac for “and,” ond for “but,” achos or oherwydd for “because,” pan for “when,” os for “if,” er for “although,” and felly for “so/therefore.” The sentence order is often familiar to an English speaker, but learn two Welsh patterns early: a can cause aspirate mutation (te a choffi), while pan normally causes soft mutation (pan fydda i).

Welsh normally distinguishes a command to one familiar person from a command to several people or to one person addressed formally. The familiar singular often uses a short verb stem, while the plural or formal form usually ends in -wch: Tyrd! “Come!” but Dewch! “Come!” To say “don't,” use paid â in the singular and peidiwch â in the plural or formal form, followed by the verb-noun: Paid â phoeni! “Don't worry!”

Use a present form of bod (“to be”) + wedi + a verb-noun to present an action as completed now: Dw i wedi gorffen (“I have finished”). Replace wedi with newydd for something that has just happened: Dw i newydd gyrraedd (“I have just arrived”). Do not add yn in either pattern, and remember that newydd causes soft mutation of the following verb-noun.

Four very common Welsh verbs have short, irregular past forms that are worth learning as complete phrases: mynd “go” → es i “I went,” dod “come” → des i “I came,” gwneud “do/make” → wnes i “I did/made,” and cael “get/have” → ces i “I got/had.” Their forms change with the person, and questions or negatives can also change the first consonant: Gest ti amser da? “Did you have a good time?” but Chest ti ddim amser “You didn’t have time.”

In a common Welsh pattern, an object pronoun is placed before a verb-noun and repeated after it: fy ngweld i “see me,” dy weld di “see you,” and ei gweld hi “see her.” The first word has the same form as a possessive (“my,” “your,” “his/her”), it may mutate the verb-noun, and the final echo pronoun makes the person clear.

Use Mae + person + yn + adjective for general qualities: Mae e'n dal means “He is tall.” For features such as hair and eyes, use Mae + feature + ganddo/ganddi or gyda fe/hi: Mae gwallt golau ganddi means “She has fair hair.” In a noun phrase, the adjective normally follows the noun: llygaid glas (“blue eyes”).

Use Dw i'n meddwl bod... for “I think (that)...”, Yn fy marn i... for “In my opinion...”, and Mae'n well gen i... for “I prefer...”. To respond, Dw i'n cytuno means “I agree”, while Dw i ddim yn cytuno and Dw i ddim yn siŵr am hynny let you disagree or express doubt without sounding abrupt.

Use the preterite of bod (“to be”) for a completed, bounded period in the past: Bues i yn Sbaen am wythnos means “I was in Spain for a week.” Its core forms are bues i, buest ti, buodd e/hi, buon ni, buoch chi, buon nhw. English “was” and “were” do not show the crucial contrast: Welsh normally uses roedd- instead when the past situation is background, ongoing, or habitual.

Welsh forms the everyday future with a future form of bod (“to be”) followed by yn and a verb-noun: Bydda i'n gweithio yfory means “I will work tomorrow.” The main forms are bydda i, byddi di, bydd e/hi, byddwn ni, byddwch chi, byddan nhw. In questions and negatives, initial b normally undergoes soft mutation to f: Fydd hi'n dod? and Fydd hi ddim yn dod.

Welsh can put tense and person directly into a verb: gwelais i means “I saw,” while gwelodd hi means “she saw.” These are called short or inflected forms because they do not need bod (“to be”) as an auxiliary verb (a helping verb). At B1, the most useful forms are common past-tense forms, especially those of mynd, dod, cael, gwneud, and frequent third-person verbs in narrative.

Welsh commonly expresses “would” with a conditional form of bod (“to be”): baswn i, baset ti, basai fe/hi, basen ni, basech chi, basen nhw. For an action, put yn before a verb-noun (the basic dictionary form of a Welsh verb): Baswn i'n mynd means “I would go.” Questions and negatives commonly begin with the soft-mutated f- form: Fasai hi'n dod? and Fasai hi ddim yn dod.

Welsh commonly expresses “as ... as” with mor + adjective + â, “more ... than” with an -ach form or mwy + adjective + na, and “the most ...” with an -af form or mwyaf + adjective. The most frequent adjectives are not always regular: learn sets such as da → gwell → gorau (“good → better → best”) and mawr → mwy → mwyaf (“big → bigger → biggest”).

Welsh often puts the information in focus at the beginning of the sentence. Use sy/sydd when that fronted element is the subject of a present-tense clause: Siân sy'n dod (“It is Siân who is coming”). Use yw/ydy in identifying or descriptive patterns such as Athrawes ydy hi, while a place or time phrase can be followed by the usual verb phrase: Yng Nghaerdydd dw i'n byw.

After verbs such as meddwl “think,” gwybod “know,” and dweud “say,” Welsh commonly introduces a complete idea with bod: Dw i'n meddwl bod hi'n iawn means “I think (that) she is right.” With pronoun subjects, you will also meet personal patterns such as fy mod i, dy fod di, ei fod e, and ei bod hi. Do not simply put an independent clause beginning with mae after the first verb.

Welsh impersonal verb forms describe an action without naming the person who performs it. Their main endings are -ir for present or future meaning, -wyd for a completed past action, and -id for conditional or past habitual meaning: Siaradir Cymraeg yma means “Welsh is spoken here,” while Gwelwyd y car means “The car was seen.” They often correspond to an English passive, but English “people,” “they,” “one,” or “you” can also be the most natural translation.

Welsh links events in time with pan “when”, cyn “before”, ar ôl “after”, tra “while”, nes “until”, and ers “since”. The essential choice is between a full clause, as in pan fydd hi'n cyrraedd, and a verb-noun pattern, as in cyn mynd or cyn i fi fynd. Watch especially for future forms after pan and soft mutation in patterns with i + subject + verb-noun.

Use os for a real or open condition: something that may happen, regularly happens, or is currently true. For a possible future event, Welsh commonly uses a future form in the os clause as well as in the result: Os bydd hi'n braf, byddwn ni'n mynd (“If it is fine, we will go”). This differs from English, which normally avoids will directly after if.

Welsh has many built-up verb-nouns such as penderfynu “to decide,” defnyddio “to use,” ymddiheuro “to apologise,” and ymddwyn “to behave.” Although their formation varies, they fit the same sentence frames as simpler verb-nouns: Dw i'n defnyddio... for a present action and Dw i wedi penderfynu... for a completed one. Learn each form together with the object, preposition, or second verb-noun that normally follows it.

Welsh uses cyntaf for “first”, ail for “second”, and gender-sensitive forms such as trydydd/trydedd for “third”. Word order is not uniform: compare y tro cyntaf “the first time” with yr ail dŷ “the second house”, where tŷ undergoes soft mutation. The most useful everyday fractions are hanner “half”, chwarter “quarter”, and traean “third”.

Welsh cael can mean “get” or “receive,” but it also expresses permission and forms a common type of passive sentence. Compare Ces i anrheg (“I got a present”), Ga i fynd? (“May I go?”), and Cafodd y llyfr ei gyhoeddi (“The book was published”). For ability—being capable of doing something—use gallu, not cael.

Welsh uses bod + yn mynd i + verb-noun for an intention (“be going to”), future bod + yn + verb-noun for what someone will do, Beth am + verb-noun? to offer an idea, and Gawn ni + verb-noun? to propose doing something together. The verb-noun—the basic form listed in a dictionary—often undergoes a soft mutation after i, am, or gawn ni: coginio → goginio, mynd → fynd, cwrdd → gwrdd.

Welsh does not use one all-purpose equivalent of English who, which, and that. Use sy(dd) for a direct affirmative relative with present-tense bod, a (often less visible in speech) in many other direct affirmative relatives, y/yr plus a form such as ynddo or ei for an indirect relationship, and na/nad for a negative relative: y ferch nad oedd yn hapus means “the girl who was not happy.”

Welsh commonly forms the passive with a form of cael (“get/receive”), a possessive form, and a verb-noun: Cafodd y llyfr ei ysgrifennu means “The book was written.” The possessive refers back to the person or thing affected and controls mutation: Ces i fy ngweld “I was seen,” Cafodd e ei dalu “He was paid,” and Cafodd hi ei thalu “She was paid.”

Welsh uses pe to introduce imagined or contrary-to-fact conditions. A second conditional commonly pairs pe + a conditional form of bod with another conditional: Pe baswn i'n gyfoethog, baswn i'n teithio (“If I were rich, I would travel”). For an unreal past, use pe + bawn-series form + wedi, followed by baswn + wedi in the result: Pe bawn i wedi gwybod, faswn i wedi dod (“If I had known, I would have come”).

Welsh reported speech usually rebuilds a speaker's words as a noun clause (a group of words that functions as the content of “said,” “asked,” or “thought”). Use a form of bod for many statements—Dwedodd e ei fod e'n mynd (“He said he was going”)—but use patterns such as y byddai for an inflected future or conditional and a oedd... for an indirect yes/no question. Pronouns, time words, and tense may also change to match the reporter's point of view.

Welsh builds many tenses with a form of bod (“to be”) plus a short linking word and a verb-noun (the basic dictionary form used for an action). Use wedi for a completed action, newydd for “just,” and yn for an action in progress or a regular activity: Dw i wedi gorffen (“I have finished”), Dw i newydd gyrraedd (“I have just arrived”), and Dw i’n gweithio (“I am working”). Put bod in the imperfect to move the viewpoint into the past: Roeddwn i wedi gorffen (“I had finished”).

Use achos, oherwydd (bod), or gan fod to give a reason; use i or er mwyn to state an aim; and use felly, o ganlyniad, or mor ... fel bod to introduce a consequence. English “so” can express either purpose or result, but Welsh normally makes the relationship clearer: er mwyn i ... presents an intended outcome, while fel bod ... often presents the state or consequence that follows.

Welsh commonly forms the passive with a tense of cael (“get” or “receive”), a possessive word, and a verb-noun (the basic action form used after many other verbs): Ces i fy nhalu means “I was paid.” To move the passive through time, change the form around cael, while the final verb-noun stays the same: Mae e'n cael ei dalu, Cafodd e ei dalu, Bydd e'n cael ei dalu.

Welsh forms the future perfect with a future form of bod (“to be”) + wedi + a verb-noun: Bydda i wedi gorffen erbyn tri means “I will have finished by three.” The past conditional, also called the conditional perfect, uses a conditional form of bod + wedi + a verb-noun: Baswn i wedi mynd means “I would have gone.” Unlike ordinary future and conditional action phrases, these perfect forms do not put yn before the main verb.

Welsh discourse connectors show how one idea relates to another: fodd bynnag introduces a contrast, yn ogystal â adds information, o ganlyniad gives a result, and mewn gwirionedd corrects an impression or states the reality. They do more than translate English words such as “however” or “in fact”: each expression has its own grammatical pattern and a particular job in the argument.

Welsh commonly uses er bod for “although,” er gwaethaf for “despite,” tra bod for “whereas,” and yn hytrach na for “rather than.” When the subject of an er bod clause is a pronoun, bod often appears with a possessive form: er fy mod i, er dy fod di, er ei bod hi. Use er i + subject + verb-noun when the contrast centres on an action: Er i fi geisio... (“Although I tried...” ).

Formal and literary Welsh often puts person and tense directly into one finite verb (a verb marked for who acts and when): af “I shall go,” dywedai “he or she used to say,” and gwnânt “they will do.” These forms are much more compact than everyday patterns with bod (“to be”), and their endings often make a subject pronoun unnecessary. They are essential for reading literature, formal prose, public language, and older texts, even if you do not use every form in conversation.

Formal Welsh uses mixed mutation after the negative particles ni, na, and oni: p, t, c take aspirate mutation, while b, d, g, m, ll, rh take soft mutation. The relative and interrogative particle a instead causes soft mutation. In speech, these particles are often omitted, but the mutation they would have caused may remain.

Formal Welsh is not simply everyday Welsh with more impressive vocabulary. Careful writing may use yr wyf instead of dw i, y mae instead of mae, and ni/nid for negation, while keeping clauses more fully expressed and deliberately organised. These forms are especially useful in formal correspondence, official statements, reports, essays, and traditional literary prose, but good modern writing normally selects them rather than packing every sentence with them.

Welsh idioms are best learned as whole patterns, not rebuilt by translating each English word. Some are colourful images, such as rhoi'r ffidil yn y to (“give up”), while many everyday expressions use a preposition that changes with the person: Mae'n well gen i de (“I prefer tea”), but Mae'n well ganddi hi goffi (“She prefers coffee”). Keep the fixed part fixed, and learn exactly which parts may change.

Advanced Welsh sentences often package several relationships into one structure: concession with er bod or er iddo/iddi, result with mor ... fel bod or nes, and open-ended conditions with beth bynnag. Formal writing also uses compact subordinate patterns such as y bydd, na all, and relative a more freely than everyday speech. The key is to learn each connector together with the form and mutation that normally follows it.

Welsh does not have just one “spoken form” and one “written form.” It has a range of registers: relaxed speech may use forms such as ma', ti'n, and sgen ti, neutral Welsh commonly uses mae e/o, and formal or literary texts may use y mae ef or yr wyf. Choose forms that belong together and suit the situation; dialect and register overlap, but they are not the same thing.

Welsh poetic language brings sound and grammar unusually close together. In cynghanedd, a disciplined system of sound harmony, consonant correspondence, internal rhyme, and stress shape individual lines; elsewhere, poets may use strict metre, free verse, literary syntax, or a mixture of old and new forms. At C1, the useful goal is first to hear and interpret these effects—not to assume that every poem uses cynghanedd or that poetic word order belongs in everyday prose.

Good Welsh translation preserves the meaning and function of an English expression, not necessarily its individual words. Instead of matching take with one Welsh verb and part with one Welsh noun, learn the Welsh unit cymryd rhan (“take part”). Some English-shaped expressions are clearly misleading, while others are established or acceptable in certain contexts, so idiomatic choice also depends on meaning, register, and editorial style.

Advanced Welsh discourse grammar is less about building a correct clause and more about making that clause fit the conversation. Speakers use tags such as on'd ydy?, stance markers such as tybed, falle, and hwyrach, and special word orders to invite agreement, soften certainty, contrast alternatives, or highlight new information. These choices depend heavily on register, region, intonation, and what the listener already knows.

Middle Welsh is the language of prose and poetry from roughly the twelfth to the fourteenth centuries, including the tales now known as the Mabinogion. A modern reader must learn to recognise variable spelling, older pronouns and verb forms, and particles such as a, ni, canys, and sef. Most of these forms belong to reading rather than everyday conversation, although some survive in formal writing, biblical language, proverbs, and names.

Welsh has several living regional varieties, not one spoken form with a few local oddities. The broadest learner-friendly contrast is North Wales versus South Wales: you may hear rŵan / nawr “now”, llefrith / llaeth “milk”, efo / gyda “with”, and Dwi isio / Dw i moyn “I want”. These are tendencies rather than a rigid border, so advanced competence means recognising alternatives and adapting to speakers—not declaring one form universally correct.

Official and legal Welsh is a register—a variety chosen for a particular setting—rather than a separate grammar. It often foregrounds the rule or action through impersonal verbs such as gwrthodir “is refused,” expresses duties precisely with rhaid, and organizes long provisions with fixed connectors such as yn unol â “in accordance with.” The aim is not maximum formality, but language that is exact, consistent, and suitable for its legal effect.

Everyday Welsh is not simply formal written Welsh spoken quickly. Speakers shorten frequent phrases—Sut mae? becomes S'mae?, ti'n gwybod may become ti'mod, and oes gen may appear as sgen—while also using regional forms, fillers, response words, and current slang. These forms are systematic but not uniform: who is speaking, where they are from, and whether the conversation is face-to-face or written online all matter.

Welsh news language usually occupies a middle register: more controlled and standardised than casual conversation, but less literary than traditional formal prose. Its most recognisable tools are careful attribution (yn ôl ffynonellau), agentless or impersonal verbs (datgelwyd, “it was revealed”), compact headlines, and precise signals showing whether a statement is confirmed, alleged, or merely expected.

Welsh place names often combine a landscape or settlement word with a river, saint, feature, or other name: aber + Ystwyth → Aberystwyth and llan + Mair → Llanfair. To interpret them accurately, you must allow for Welsh word order, initial mutation, older spellings, and the fact that a name may have become fixed centuries ago. A familiar-looking division is a useful hypothesis, not proof of an etymology.