Conditional Mood in Irish

In Brief

The Irish conditional mood, an modh coinníollach, expresses what someone would do or what would happen. Instead of placing a separate equivalent of “would” before the verb, Irish changes the verb itself: ól becomes d’ólfainn (“I would drink”), while ceannaigh becomes cheannóinn (“I would buy”). Hypothetical conditions commonly use dá (“if”) plus a dependent conditional form: Dá mbeinn ann, chabhróinn (“If I were there, I would help”).

Overview

A mood is a set of verb forms that presents an action in a particular way—for example, as a fact, a command, or a possibility. The conditional mood presents an action as dependent on imagined circumstances. You use it for unreal or uncertain outcomes, personal preferences, cautious opinions, and polite requests.

The conditional is introduced at B1, but it draws on earlier Irish grammar. As in the past tense, the beginning of a verb may change through lenition (adding h after an initial consonant) or by adding d’ before a vowel or lenited f. The endings also reflect the two regular conjugations. First-conjugation verbs use endings built around -fadh/-feadh; second-conjugation verbs use -ódh/-eodh.

English normally uses the separate auxiliary verb “would”: “she would buy.” Irish packages that meaning into one conjugated verb: cheannódh sí. The person may be shown by a separate pronoun, but several forms have synthetic endings—endings that already include the meaning “I,” “you,” “we,” or “they.” This is why cheannóinn means “I would buy” without mé.

How It Works

The basic sentence pattern

A straightforward conditional statement normally has this order:

Pattern	Irish	Meaning
conditional verb + subject + rest	Cheannódh sí an leabhar.	She would buy the book.
synthetic conditional verb + rest	Cheannóinn an leabhar.	I would buy the book.

Irish remains verb-first. Do not copy English word order by putting the pronoun before the verb.

First-conjugation verbs

The first conjugation includes many one-syllable verbs. Its conditional marker has a broad form -fadh and a slender form -feadh. “Broad” means that the final consonant is next to a, o, or u; “slender” means it is next to e or i. The spelling of the ending follows the final consonant of the stem.

Here is the full paradigm of mol (“praise”), a broad verb:

Person	Form	Meaning
1st singular	mholfainn	I would praise
2nd singular	mholfá	you would praise
3rd singular	mholfadh sé/sí	he/she would praise
1st plural	mholfaimis	we would praise
2nd plural	mholfadh sibh	you would praise
3rd plural	mholfaidís	they would praise
autonomous	mholfaí	one would praise / would be praised

With a slender stem such as bris (“break”), the corresponding forms are bhrisfinn, bhrisfeá, bhrisfeadh sé/sí, bhrisfimis, bhrisfeadh sibh, and bhrisfidís. Notice that the broad/slender contrast affects several endings, not just the third-person form.

Second-conjugation verbs

The second conjugation contains many verbs with two or more syllables, including verbs ending in -aigh or -igh. Its conditional marker is -ódh after a broad stem and -eodh after a slender stem. In practice, the ending may replace part of the dictionary form: ceannaigh (“buy”) gives cheannóinn, not a form made by simply attaching an ending to every written letter.

Person	ceannaigh (“buy”)	Meaning
1st singular	cheannóinn	I would buy
2nd singular	cheannófá	you would buy
3rd singular	cheannódh sé/sí	he/she would buy
1st plural	cheannóimis	we would buy
2nd plural	cheannódh sibh	you would buy
3rd plural	cheannóidís	they would buy
autonomous	cheannófaí	one would buy / would be bought

A slender example is imigh (“leave”): d’imeoinn, d’imeofá, d’imeodh sé/sí, d’imeoimis, d’imeodh sibh, and d’imeoidís. Learning a verb’s conjugation and conditional stem together is safer than guessing from syllable count alone.

Initial changes in affirmative forms

A positive independent form—the form used without a preceding particle—normally lenites an initial lenitable consonant:

Dictionary form	Conditional	Meaning
bris	bhrisfeadh sé	he would break
ceannaigh	cheannódh sí	she would buy
fan	d’fhanfainn	I would stay
ól	d’ólfá	you would drink

A verb beginning with a vowel takes d’. An initial f is lenited to fh, which is silent, and also takes d’: fan → d’fhanfainn. Some consonants do not show lenition in spelling, so the opening may appear unchanged.

Negative statements and questions

The ordinary negative particle is ní, followed by lenition where possible. Questions use an, and negative questions use nach; these normally trigger eclipsis (placing another consonant before the original one) in the dependent verb form.

Function	Pattern	Example	Meaning
statement	independent conditional	Cheannódh sé é.	He would buy it.
negative	ní + lenition	Ní cheannódh sé é.	He would not buy it.
question	an + eclipsis	An gceannódh sé é?	Would he buy it?
negative question	nach + eclipsis	Nach gceannódh sé é?	Would he not buy it?

The answer normally repeats the verb rather than using a direct Irish equivalent of “yes” or “no”:

• An gceannófá é? — Cheannóinn. (“Would you buy it? — I would.”)
• An ndéanfadh sí é? — Ní dhéanfadh. (“Would she do it? — She would not.”)

Hypothetical conditions with dá

Use dá for an imagined, contrary-to-fact, or remote condition. It normally triggers eclipsis in the following dependent form:

If-clause	Result clause
Dá mbeadh níos mó ama agam,	léifinn an leabhar.
If I had more time,	I would read the book.

Both clauses often contain forms traditionally belonging to the conditional system: mbeadh in the condition and léifinn in the result. The order can be reversed without changing the basic meaning: Léifinn an leabhar dá mbeadh níos mó ama agam.

Do not confuse dá with má. Má presents an open, realistic possibility and is normally paired with present or future meaning: Má bhíonn sé tirim, rachaimid amach (“If it is dry, we will go out”). Dá moves the situation into the imagined “if … would …” space: Dá mbeadh sé tirim, rachaimis amach (“If it were dry, we would go out”).

Important irregular verbs

Irish has eleven commonly taught irregular verbs. Their conditional forms must be learned from their special stems, although the person endings remain recognisable.

Verb	1st singular	3rd singular	Meaning
bí	bheinn	bheadh sé/sí	I would be; he/she would be
abair	déarfainn	déarfadh sé/sí	I would say; he/she would say
déan	dhéanfainn	dhéanfadh sé/sí	I would do; he/she would do
faigh	gheobhainn	gheobhadh sé/sí	I would get; he/she would get
feic	d’fheicfinn	d’fheicfeadh sé/sí	I would see; he/she would see
tabhair	thabharfainn	thabharfadh sé/sí	I would give; he/she would give
tar	thiocfainn	thiocfadh sé/sí	I would come; he/she would come
téigh	rachainn	rachadh sé/sí	I would go; he/she would go

Dependent forms can look different after particles: dá mbeinn (“if I were”), an ndéanfá? (“would you do?”), and dá bhfaighinn (“if I got”). Treat the particle and the following verb as a unit when practising.

Examples in Context

Irish	English	Note
D’ólfainn caife anois.	I would drink coffee now.	First conjugation; vowel takes d’
Cheannódh sí é dá mbeadh sé níos saoire.	She would buy it if it were cheaper.	Second conjugation with a dá clause
Dá mbeinn saibhir, thaistealóinn timpeall na hEorpa.	If I were rich, I would travel around Europe.	Hypothetical condition
Ní dhéanfadh sé é sin.	He would not do that.	Irregular déan after ní
An dtiocfá linn anocht?	Would you come with us tonight?	Polite invitation; irregular tar
Thabharfainn cabhair duit dá bhféadfainn.	I would help you if I could.	Literally “I would give help to you”
An gceannófá an ceann gorm nó an ceann dearg?	Would you buy the blue one or the red one?	Question with eclipsis
D’fhanfaimis níos faide, ach tá an bus ag imeacht.	We would stay longer, but the bus is leaving.	f lenites after d’
Déarfadh Máire an rud céanna.	Máire would say the same thing.	Irregular abair
Dá bhfaighinn an post, bhogfainn go Gaillimh.	If I got the job, I would move to Galway.	Dependent faigh after dá
Ní rachainn ann liom féin.	I would not go there on my own.	Irregular téigh
An osclófá an fhuinneog, le do thoil?	Would you open the window, please?	Polite request
Bheadh cupán tae go deas.	A cup of tea would be nice.	Soft, indirect preference
Cheannófaí go tapa é ar an bpraghas sin.	It would be bought quickly at that price.	Autonomous conditional

Common Mistakes

Adding an English-style word for “would”

• Wrong: Would mé ceannaigh é.
• Right: Cheannóinn é.
• Why: Irish expresses “would” through the conjugated verb. It does not insert the English auxiliary into an Irish sentence.

Keeping English subject-first order

• Wrong: Sí cheannódh é.
• Right: Cheannódh sí é.
• Why: A normal Irish clause begins with the verb. Synthetic forms such as cheannóinn already contain the subject meaning and need no mé.

Forgetting the initial mutation

• Wrong: Ceannódh sí é.
• Right: Cheannódh sí é.
• Why: A positive independent conditional normally lenites a lenitable initial consonant. After an or dá, use the dependent form and the mutation required by the particle: an gceannódh, dá gceannódh.

Using má for every kind of “if”

• Wrong: Má bheinn saibhir, cheannóinn teach mór.
• Right: Dá mbeinn saibhir, cheannóinn teach mór.
• Why: An imagined “if I were …, I would …” condition normally takes dá. Use má for an open possibility, as in “if it happens.”

Building every verb from its dictionary spelling

• Wrong: ceannaighfeadh sí
• Right: cheannódh sí
• Why: Ceannaigh is a second-conjugation verb and uses the conditional stem ceannó-. Irregular verbs may change even more: téigh → rachainn and abair → déarfainn.

Confusing ba mhaith liom with an ordinary verb form

• Wrong assumption: ba is the conditional of a regular verb meaning “like.”
• Right understanding: Ba mhaith liom caife means “I would like coffee,” but it is a copular expression: literally, coffee “would be good with me.”
• Why: This very common phrase belongs to the copula system, not to the regular conditional conjugation described above.

Usage Notes

The conditional is common in both speech and writing. In everyday conversation, it often makes a request less direct: An osclófá an doras? (“Would you open the door?”) is softer than a command. Likewise, Ar mhaith leat…? and Ba mhaith liom… are standard polite expressions, although their grammar involves the copula rather than an ordinary conditional verb.

Irish can also use the conditional to soften an opinion or suggestion. Déarfainn go bhfuil sé ceart means “I would say that it is right,” with the same cautious tone as English. B’fhearr liom fanacht (“I would prefer to stay”) is another copular expression that presents a preference tactfully.

You will encounter both synthetic and analytic forms. A synthetic form puts person and verb into one word, as in dhéanfainn (“I would do”) or dhéanfaimis (“we would do”). An analytic form uses a general verb form plus a separate pronoun, as in dhéanfadh sé or dhéanfadh sibh. Regional speech may favour alternative person patterns, including forms with separate pronouns. For active production, choose one standard paradigm and learn to recognise the common alternatives you hear.

Beyond the Basics / Advanced Use

Conditional versus habitual past

The conditional and habitual past can resemble one another because both often show lenition and endings containing -adh/-eadh. Meaning and the full form distinguish them:

Conditional	Habitual past	Contrast
D’ólfadh sé caife dá mbeadh sé anseo.	D’óladh sé caife gach maidin.	He would drink vs he used to drink
Cheannódh sí leabhar.	Cheannaíodh sí leabhar gach seachtain.	She would buy vs she used to buy

Time expressions and surrounding clauses help, but you must also recognise the conjugation pattern.

The autonomous conditional

The autonomous form describes an action without naming its doer. Depending on context, English translates it with “one,” “people,” or a passive construction:

• Dhéanfaí é ar bhealach eile anois. — “It would be done differently now.”
• Cheannófaí na ticéid roimh ré. — “The tickets would be bought in advance.”

This form is useful when the imagined result matters more than who would carry it out.

Past counterfactual meaning

English has an explicit “would have done” construction. Irish often relies on conditional forms plus context to describe an unreal past result:

• Dá mbeadh a fhios agam, d’inseóinn duit. — “If I had known, I would have told you.”

The same forms can therefore point to present, future, or past hypothetical situations. Context supplies the time reference. More elaborate counterfactual sentences and the relationship between dá, the conditional, and forms traditionally called the past subjunctive belong to advanced study; the practical B1 rule remains reliable: learn common dá patterns as complete pairs.

Fixed and highly frequent conditional expressions

Some forms are worth learning whole because they occur constantly:

• Ba mhaith liom… — “I would like…”
• Ar mhaith leat…? — “Would you like…?”
• B’fhearr liom… — “I would prefer…”
• D’fhéadfainn… — “I could…”
• Déarfainn… — “I would say…”
• Bheadh sé níos fearr… — “It would be better…”

The first three involve the copula; the others use verbal conditional forms. Their similar English translations should not hide their different Irish grammar.

Practice Tips

1. Build three forms at a time. For each new verb, write an affirmative, a negative, and a question: cheannóinn, ní cheannóinn, an gceannófá? This trains both endings and mutations.
2. Practise condition-result pairs. Complete prompts such as Dá mbeadh níos mó ama agam… or Dá bhfaighinn post nua…. Saying both clauses prevents dá from becoming an isolated vocabulary item.
3. Keep an irregular-verb card set. Put the dictionary form on one side and a useful first-person phrase on the other: téigh → rachainn ann; faigh → gheobhainn é; tar → thiocfainn leat. Then add their dependent forms with dá.

Related Concepts

• Prerequisite: Past Tense — introduces many of the initial changes reused in conditional forms.
• Next step: Basic Conditional Sentences — contrasts realistic conditions with imagined results and develops complete if-sentences.
• Advanced connection: The Subjunctive Mood — explores wishes and the wider traditional mood system related to dependent and hypothetical forms.