Basic Conditional Sentences in Irish

In Brief

Use má (“if”) for a real or open condition: Má thagann sé, beidh mé sásta (“If he comes, I’ll be happy”). Má normally lenites the following verb, while negative mura (“if not” or “unless”) normally takes a dependent verb form and causes eclipsis: Mura dtagann sé, imímis (“If he doesn’t come, let’s leave”). These patterns describe something treated as genuinely possible, not an unreal situation such as “if I were rich.”

Overview

A conditional sentence links a condition with its result. Each part is a clause (a group of words built around its own verb): in “If the bus comes, we’ll leave,” if the bus comes is the condition and we’ll leave is the result. Irish commonly introduces an open condition with má and a negative open condition with mura.

The main challenge for an English-speaking learner is not the meaning of “if,” but what happens immediately after it. Irish initial mutation changes the beginning of a word. Lenition softens a consonant and is usually shown by adding h, as in tagann → thagann. Eclipsis places another consonant before the original one, as in tagann → dtagann. The verb after mura may also need its dependent form (the form used after certain particles), which matters especially with irregular verbs.

This B1 pattern is useful for plans, warnings, promises, instructions, and general cause-and-effect statements. It is called an open or real condition because the speaker presents the condition as possible. Irish uses a different pattern, generally dá plus conditional forms, when the situation is imagined, contrary to fact, or remote.

How It Works

The basic two-clause pattern

The order can be shown simply:

Má/mura + condition, result

• Má bhíonn am agat, cuir glaoch orm. — If you have time, call me.
• Mura mbíonn am agat, seol teachtaireacht. — If you do not have time, send a message.

The condition usually comes first, but it can come second:

• Cuir glaoch orm má bhíonn am agat. — Call me if you have time.

A comma is natural when the condition comes first, especially in a longer sentence. When it comes last, a comma is usually unnecessary.

Using má: positive open conditions

Má means “if.” It normally causes lenition on a following consonant that can be lenited.

Irish	English	What changes?
Má thagann sí…	If she comes…	tagann → thagann
Má cheannaíonn tú…	If you buy…	ceannaíonn → cheannaíonn
Má fhágann siad…	If they leave…	fágann → fhágann
Má ólann sé…	If he drinks…	A vowel has no visible lenition

Not every initial can show lenition in spelling. A vowel remains a vowel, and some consonants do not take h in this environment. The practical habit is to learn the complete chunk má + mutated verb, rather than translating word by word and adding the mutation later.

With regular present-tense verbs, the verb after má is the ordinary independent form apart from the mutation. Several common irregular verbs also have familiar independent forms here:

• Má tá sé ann… — If he is there…
• Má deir sí é… — If she says it…
• Má théann tú… — If you go…
• Má dhéanann siad é… — If they do it…

The verb bí (“be”) deserves special attention. Tá commonly refers to a state that holds now, while bíonn is the present habitual form and is frequent in conditions meaning “whenever/if it is” or “if it turns out to be.” Compare:

• Má tá sé sa bhaile, labhair leis. — If he is at home, speak to him.
• Má bhíonn sé fuar, fan sa bhaile. — If it is cold, stay at home.

Using mura: negative open conditions

Mura means “if not” and often also translates naturally as “unless.” Do not normally add ní after it: mura already contains the negative meaning.

After mura, use the dependent form of the verb and normally apply eclipsis where possible:

Irish	English	Form after mura
Mura dtagann sé…	If he does not come…	tagann eclipsed by d
Mura gceannaíonn tú…	If you do not buy…	ceannaíonn eclipsed by g
Mura bhfágann siad…	If they do not leave…	fágann eclipsed by bh
Mura mbíonn sí ann…	If she is not there…	dependent habitual form of bí
Mura bhfuil sé ann…	If he is not there…	irregular dependent form fuil

Eclipsis is visible in common pairs such as b → mb, c → gc, d → nd, f → bhf, g → ng, p → bp, and t → dt. Vowel-initial verbs may take n-, though the exact written form depends on the verb form involved.

Irregular verbs make the idea of a dependent form especially clear. Compare má tá with mura bhfuil, not mura dtá. Similarly, it is best to learn frequent pairs as units, such as má deir / mura ndeir (“if [someone] says / if [someone] does not say”) and má théann / mura dtéann (“if [someone] goes / if [someone] does not go”).

Choosing the tense in each clause

An open condition does not require the same tense in both clauses. Choose each verb according to its meaning.

Pattern	Irish	English
Present condition + future result	Má thagann sé, beidh mé sásta.	If he comes, I’ll be happy.
Present condition + command	Má bhíonn sé fuar, fan sa bhaile.	If it is cold, stay at home.
Present condition + present result	Má bhíonn sé ag cur báistí, fanaimid istigh.	If it rains, we stay inside.
Past condition + past result	Má tháinig sí inné, chonaic Seán í.	If she came yesterday, Seán saw her.
Negative condition + suggestion	Mura dtagann sé, imímis.	If he does not come, let’s leave.

English normally uses a present form in a likely future if-clause: “If you buy it, I’ll pay you,” not “if you will buy it.” The most useful Irish B1 model is similar: use a present or habitual form after má, then put the future meaning in the result clause:

• Má cheannaíonn tú é, tabharfaidh mé airgead duit. — If you buy it, I’ll give you money.

Irish can use tense forms according to context more flexibly than a single classroom formula suggests, but this present-condition/future-result pattern is the safest productive starting point.

Más with the copula

The copula is the small linking verb used to identify or classify someone or something, as in Is dochtúir í (“She is a doctor”). Before the copula is, má combines with it as más:

• Más múinteoir í, beidh an freagra ar eolas aici. — If she is a teacher, she will know the answer.
• Más fíor é sin, caithfimid imeacht. — If that is true, we must leave.

Do not confuse más with má tá. Use más with a copular classification or identification; use má tá with location, condition, possession constructions, and other meanings expressed with bí.

Examples in Context

Irish	English	Note
Má bhíonn sé fuar, fan sa bhaile.	If it is cold, stay at home.	Condition followed by a command
Má cheannaíonn tú é, tabharfaidh mé airgead duit.	If you buy it, I’ll give you money.	Present condition, future promise
Mura dtagann sé, imímis.	If he does not come, let’s leave.	Negative condition and suggestion
Má tá ocras ort, tá anraith sa chistin.	If you are hungry, there is soup in the kitchen.	Current state with tá
Má bhíonn ceist agat, cuir ceist orm.	If you have a question, ask me.	Habitual/open possibility
Má fheiceann tú Máire, abair léi glaoch orm.	If you see Máire, tell her to call me.	Everyday instruction
Má chríochnaímid go luath, rachaimid chuig an bpictiúrlann.	If we finish early, we’ll go to the cinema.	Future plan
Mura bhfuil bainne ann, ólfaidh mé tae dubh.	If there is no milk, I’ll drink black tea.	Irregular dependent form of bí
Mura gceannaíonn tú ticéad anois, beidh sé ródhéanach.	If you do not buy a ticket now, it will be too late.	Warning
Mura mbíonn an siopa oscailte, bainfimid triail as amárach.	If the shop is not open, we’ll try tomorrow.	Negative open possibility
Más fíor an scéal, beidh iontas ar gach duine.	If the story is true, everyone will be surprised.	más with the copula
Glaoigh orm má athraíonn an plean.	Call me if the plan changes.	Condition placed second
Má tháinig an ríomhphost ar maidin, léigh sí cheana é.	If the email arrived this morning, she has already read it.	Past condition

Common Mistakes

1. Forgetting lenition after má

• Wrong: Má tagann sé, beidh mé sásta.
• Right: Má thagann sé, beidh mé sásta.
• Why: Má normally lenites a following consonant when that consonant can be lenited: tagann becomes thagann.

2. Using lenition instead of eclipsis after mura

• Wrong: Mura thagann sé, imímis.
• Right: Mura dtagann sé, imímis.
• Why: Mura normally causes eclipsis, not the lenition associated with má.

3. Adding a second negative

• Wrong: Mura ní thagann sé…
• Right: Mura dtagann sé…
• Why: Mura already means “if not.” Irish does not need ní as well.

4. Keeping an independent irregular form after mura

• Wrong: Mura dtá sé sa bhaile…
• Right: Mura bhfuil sé sa bhaile…
• Why: After mura, bí uses the dependent form fuil, with the appropriate mutation. Learn má tá / mura bhfuil as a pair.

5. Using the conditional mood for every real future condition

• Wrong for the intended meaning: Má cheannófá é, thabharfainn airgead duit when you simply mean “If you buy it, I’ll give you money.”
• Right: Má cheannaíonn tú é, tabharfaidh mé airgead duit.
• Why: A normal possible plan uses an open má condition. Conditional forms shift the meaning toward “would,” politeness, hypothesis, or an unreal pattern and need the appropriate construction.

6. Treating má and más as interchangeable

• Wrong: Má fíor é sin…
• Right: Más fíor é sin…
• Why: Más is the combination of má + is before a copular expression. With the verb bí, use forms such as má tá or má bhíonn instead.

Usage Notes

Mura can often be translated in two ways. Mura ndéanann tú deifir, caillfidh tú an bus can mean “If you don’t hurry, you’ll miss the bus” or, more idiomatically, “Unless you hurry, you’ll miss the bus.” The Irish structure does not have to change merely because English chooses unless.

In conversation, speakers often choose má bhíonn for recurring or not-yet-settled circumstances: Má bhíonn an aimsir go maith… (“If the weather is good…”). Má tá points more readily to a state relevant now: Má tá an doras oscailte… (“If the door is open…”). Context matters, so this is a useful tendency rather than a mechanical translation rule.

The result clause can be a statement, command, question, suggestion, promise, or warning. A conditional sentence therefore does not always correspond to English “if … will …”: Má fheiceann tú é, abair liom (“If you see him, tell me”) is just as central a pattern.

You may hear differences in pronunciation and some forms across Irish dialects. For active use, follow the variety taught in your course and keep the mutation pattern consistent. The standard written forms in this article are widely useful even when pronunciation varies.

Beyond the Basics / Advanced Use

The major contrast beyond this lesson is between má and dá. Use má when the speaker leaves the condition open as a real possibility. Use dá for a hypothetical, remote, or contrary-to-fact condition; dá causes eclipsis and is commonly paired with the conditional mood:

Irish	English	View of the condition
Má bhíonn am agam, rachaidh mé leat.	If I have time, I’ll go with you.	Having time is treated as possible
Dá mbeadh am agam, rachainn leat.	If I had time, I would go with you.	Having time is imagined or doubtful
Má cheannaíonn sí é, úsáidfidh sí é.	If she buys it, she’ll use it.	Open future possibility
Dá gceannódh sí é, d’úsáidfeadh sí é.	If she bought it, she would use it.	Hypothetical situation

This difference is about the speaker’s view of the situation, not simply about present versus past time. English can use the past-looking form “if I had” for an unreal present; Irish signals that contrast through dá and the accompanying verb forms.

Advanced texts also use conditional clauses for repeated relationships, careful qualifications, and rhetorical argument. The same core question remains useful: does the writer present the condition as open and possible (má/mura), or as hypothetical (dá)? Mastering that distinction is more important than trying to map every Irish form onto an English tense name.

Practice Tips

1. Learn positive and negative pairs. Say má thagann / mura dtagann, má cheannaíonn / mura gceannaíonn, and má tá / mura bhfuil aloud. This trains the particle, mutation, and verb form together.
2. Build two-part sentences. Choose five everyday conditions—weather, transport, work, food, and plans—and give each a realistic result. Vary the result between a future statement, a command, and a suggestion.
3. Test the meaning before choosing má or dá. Ask: “Do I present this as a real possibility?” If yes, start with má or mura. If it means “would” in an imagined situation, review the dá pattern and the conditional mood.

Related Concepts

• Prerequisite and contrast: Conditional Mood — introduces “would” forms and the dá pattern used for hypothetical conditions.