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To prevent in Irish (coisc): Meaning, Conjugation, Examples

Other uses of ‘coisc’: forbid · restrain

The Irish for to prevent is coisc; ag cosc is preventing.
Updated October 2026Report a mistake

How to say “to prevent” in Irish

Irish:
coisc
English:
to prevent, forbid, restrain
Word type:
verb, first-conjugation
Verbal noun:
cosc (ag cosc, preventing)
Verbal adjective:
coiscthe
Pronunciation:
“kushk”  /kɔʃkʲ/

What does “coisc” mean?

“Coisc” has three alternative meanings. The most common comes first.

to prevent
To stop something from happening or someone from doing something.Also: stop, check, hinder, block.
2 other meanings: forbid or restrain
2to forbid
To officially ban or prohibit something.Also: prohibit, ban, bar.
3to restrain
To hold back, suppress or keep something under control, such as bleeding or thirst.Also: suppress, stem, stanch, allay.

“Coisc” in the different tenses

Every form follows An Caighdeán Oifigiúil.

Aimsir Chaite (Past)

PersonPositiveNegativeQuestion
mé (I)Choisc méI preventedNíor choisc méI did not preventAr choisc mé?Did I prevent?
tú (you)Choisc túYou preventedNíor choisc túYou did not preventAr choisc tú?Did you prevent?
sé / sí (he / she)Choisc sé / síHe preventedNíor choisc sé / síHe did not preventAr choisc sé / sí?Did he prevent?
sinn (we)ChoisceamarWe preventedNíor choisceamarWe did not preventAr choisceamar?Did we prevent?
sibh (you, plural)Choisc sibhYou preventedNíor choisc sibhYou did not preventAr choisc sibh?Did you prevent?
siad (they)Choisc siadThey preventedNíor choisc siadThey did not preventAr choisc siad?Did they prevent?
saorbhriathar (autonomous)CoisceadhNíor coisceadhAr coisceadh?

Aimsir Láithreach (Present)

PersonPositiveNegativeQuestion
mé (I)CoiscimI preventNí choiscimI do not preventAn gcoiscim?Do I prevent?
tú (you)Coisceann túYou preventNí choisceann túYou do not preventAn gcoisceann tú?Do you prevent?
sé / sí (he / she)Coisceann sé / síHe preventsNí choisceann sé / síHe does not preventAn gcoisceann sé / sí?Does he prevent?
sinn (we)CoiscimidWe preventNí choiscimidWe do not preventAn gcoiscimid?Do we prevent?
sibh (you, plural)Coisceann sibhYou preventNí choisceann sibhYou do not preventAn gcoisceann sibh?Do you prevent?
siad (they)Coisceann siadThey preventNí choisceann siadThey do not preventAn gcoisceann siad?Do they prevent?
saorbhriathar (autonomous)CoisctearNí choisctearAn gcoisctear?

Aimsir Fháistineach (Future)

PersonPositiveNegativeQuestion
mé (I)Coiscfidh méI will preventNí choiscfidh méI will not preventAn gcoiscfidh mé?Will I prevent?
tú (you)Coiscfidh túYou will preventNí choiscfidh túYou will not preventAn gcoiscfidh tú?Will you prevent?
sé / sí (he / she)Coiscfidh sé / síHe will preventNí choiscfidh sé / síHe will not preventAn gcoiscfidh sé / sí?Will he prevent?
sinn (we)CoiscfimidWe will preventNí choiscfimidWe will not preventAn gcoiscfimid?Will we prevent?
sibh (you, plural)Coiscfidh sibhYou will preventNí choiscfidh sibhYou will not preventAn gcoiscfidh sibh?Will you prevent?
siad (they)Coiscfidh siadThey will preventNí choiscfidh siadThey will not preventAn gcoiscfidh siad?Will they prevent?
saorbhriathar (autonomous)CoiscfearNí choiscfearAn gcoiscfear?

Modh Coinníollach (Conditional)

PersonPositiveNegativeQuestion
mé (I)ChoiscfinnI would preventNí choiscfinnI would not preventAn gcoiscfinn?Would I prevent?
tú (you)ChoiscfeáYou would preventNí choiscfeáYou would not preventAn gcoiscfeá?Would you prevent?
sé / sí (he / she)Choiscfeadh sé / síHe would preventNí choiscfeadh sé / síHe would not preventAn gcoiscfeadh sé / sí?Would he prevent?
sinn (we)ChoiscfimisWe would preventNí choiscfimisWe would not preventAn gcoiscfimis?Would we prevent?
sibh (you, plural)Choiscfeadh sibhYou would preventNí choiscfeadh sibhYou would not preventAn gcoiscfeadh sibh?Would you prevent?
siad (they)ChoiscfidísThey would preventNí choiscfidísThey would not preventAn gcoiscfidís?Would they prevent?
saorbhriathar (autonomous)ChoiscfíNí choiscfíAn gcoiscfí?

“Coisc” in a sentence: Irish examples

Past, present, future and conditional, with a negative and a question.

Choisc an múinteoir an troid sa chlós.
The teacher stopped the fight in the yard.
Coisceann an dlí caitheamh tobac sa phub.
The law prohibits smoking in the pub.
Coiscfidh an bháisteach orainn dul amach.
The rain will prevent us from going out.
Choisc an t-otharcharr an trácht ar an mbóthar.
The ambulance stopped the traffic on the road.
Níor choisc sé an fhuil a bhí ag sileadh.
He did not stem the bleeding.
Choisc an garda an carr ag an droichead.
The guard stopped the car at the bridge.

Other verbs in Irish

More everyday Irish verbs to learn next.

To prevent in Irish: frequently asked questions

What is the Irish for to prevent?

The Irish for to prevent is coisc (pronounced “kushk”). It is a first-conjugation verb; the verbal noun is cosc.

What is the verbal noun of coisc?

The verbal noun of coisc is cosc, used after ag for the continuous: ag cosc (preventing). The verbal adjective is coiscthe.

How do you say coisc in the past and the future?

Past: Choisc mé; negative Níor choisc mé; question Ar choisc mé?. Future: Coiscfidh mé; negative Ní choiscfidh mé; question An gcoiscfidh mé?.

What is the modh coinníollach of coisc?

The conditional (modh coinníollach) first person is Choiscfinn (I would prevent); negative Ní choiscfinn; question An gcoiscfinn?.

Does coisc have more than one meaning?

Yes. Coisc can mean to prevent, to forbid or to restrain, depending on context; the first is the most common.

Which preposition does 'coisc' take?

You prevent something on someone with 'ar': 'Choisc sé orm imeacht' means he prevented me from leaving.

How do you say 'to ban' using the verbal noun?

The phrase 'cosc a chur ar' is very common: 'Cuireadh cosc ar thobac' means tobacco was banned.

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