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To knock in Irish (cnag): Meaning, Conjugation, Examples

Other uses of ‘cnag’: crack · hit · knock (noun, masculine)

The Irish for to knock is cnag; ag cnagadh is knocking.
Updated October 2026Report a mistake

How to say “to knock” in Irish

Irish:
cnag
English:
to knock, crack, hit
Word type:
verb, first-conjugation
Verbal noun:
cnagadh (ag cnagadh, knocking)
Verbal adjective:
cnagtha
Pronunciation:
“knug”  /kn̪ˠaɡ/

What does “cnag” mean?

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

to knock
To strike something sharply, for example a door, so that it makes a sound.Also: rap, tap, strike.
2 other meanings: crack or hit
2to crack
To break something hard open with a blow, such as a nut.Also: crunch, break open.
3to hit
To give someone or something a blow or a knock.Also: thump, rap.
Other entries for “cnag”

The same spelling has its own page as:

“Cnag” in the different tenses

Every form follows An Caighdeán Oifigiúil.

Aimsir Chaite (Past)

PersonPositiveNegativeQuestion
mé (I)Chnag méI knockedNíor chnag méI did not knockAr chnag mé?Did I knock?
tú (you)Chnag túYou knockedNíor chnag túYou did not knockAr chnag tú?Did you knock?
sé / sí (he / she)Chnag sé / síHe knockedNíor chnag sé / síHe did not knockAr chnag sé / sí?Did he knock?
sinn (we)ChnagamarWe knockedNíor chnagamarWe did not knockAr chnagamar?Did we knock?
sibh (you, plural)Chnag sibhYou knockedNíor chnag sibhYou did not knockAr chnag sibh?Did you knock?
siad (they)Chnag siadThey knockedNíor chnag siadThey did not knockAr chnag siad?Did they knock?
saorbhriathar (autonomous)CnagadhNíor cnagadhAr cnagadh?

Aimsir Láithreach (Present)

PersonPositiveNegativeQuestion
mé (I)CnagaimI knockNí chnagaimI do not knockAn gcnagaim?Do I knock?
tú (you)Cnagann túYou knockNí chnagann túYou do not knockAn gcnagann tú?Do you knock?
sé / sí (he / she)Cnagann sé / síHe knocksNí chnagann sé / síHe does not knockAn gcnagann sé / sí?Does he knock?
sinn (we)CnagaimidWe knockNí chnagaimidWe do not knockAn gcnagaimid?Do we knock?
sibh (you, plural)Cnagann sibhYou knockNí chnagann sibhYou do not knockAn gcnagann sibh?Do you knock?
siad (they)Cnagann siadThey knockNí chnagann siadThey do not knockAn gcnagann siad?Do they knock?
saorbhriathar (autonomous)CnagtarNí chnagtarAn gcnagtar?

Aimsir Fháistineach (Future)

PersonPositiveNegativeQuestion
mé (I)Cnagfaidh méI will knockNí chnagfaidh méI will not knockAn gcnagfaidh mé?Will I knock?
tú (you)Cnagfaidh túYou will knockNí chnagfaidh túYou will not knockAn gcnagfaidh tú?Will you knock?
sé / sí (he / she)Cnagfaidh sé / síHe will knockNí chnagfaidh sé / síHe will not knockAn gcnagfaidh sé / sí?Will he knock?
sinn (we)CnagfaimidWe will knockNí chnagfaimidWe will not knockAn gcnagfaimid?Will we knock?
sibh (you, plural)Cnagfaidh sibhYou will knockNí chnagfaidh sibhYou will not knockAn gcnagfaidh sibh?Will you knock?
siad (they)Cnagfaidh siadThey will knockNí chnagfaidh siadThey will not knockAn gcnagfaidh siad?Will they knock?
saorbhriathar (autonomous)CnagfarNí chnagfarAn gcnagfar?

Modh Coinníollach (Conditional)

PersonPositiveNegativeQuestion
mé (I)ChnagfainnI would knockNí chnagfainnI would not knockAn gcnagfainn?Would I knock?
tú (you)ChnagfáYou would knockNí chnagfáYou would not knockAn gcnagfá?Would you knock?
sé / sí (he / she)Chnagfadh sé / síHe would knockNí chnagfadh sé / síHe would not knockAn gcnagfadh sé / sí?Would he knock?
sinn (we)ChnagfaimisWe would knockNí chnagfaimisWe would not knockAn gcnagfaimis?Would we knock?
sibh (you, plural)Chnagfadh sibhYou would knockNí chnagfadh sibhYou would not knockAn gcnagfadh sibh?Would you knock?
siad (they)ChnagfaidísThey would knockNí chnagfaidísThey would not knockAn gcnagfaidís?Would they knock?
saorbhriathar (autonomous)ChnagfaíNí chnagfaíAn gcnagfaí?

“Cnag” in a sentence: Irish examples

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

Chnag sé ar an doras.
He knocked on the door.
Cnagann an t-éan an crann gach maidin.
The bird knocks on the tree every morning.
Cnagfaidh mé na cnónna duit anocht.
I will crack the nuts for you tonight.
Chnagfadh sí ar an bhfuinneog dá mbeadh sí ann.
She would knock on the window if she were there.
Níor chnag aon duine ar an doras inné.
Nobody knocked on the door yesterday.
Ar chnag tú ar dhoras an tí?
Did you knock on the door of the house?

Other verbs in Irish

More everyday Irish verbs to learn next.

To knock in Irish: frequently asked questions

What is the Irish for to knock?

The Irish for to knock is cnag (pronounced “knug”). It is a first-conjugation verb; the verbal noun is cnagadh.

What is the verbal noun of cnag?

The verbal noun of cnag is cnagadh, used after ag for the continuous: ag cnagadh (knocking). The verbal adjective is cnagtha.

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

Past: Chnag mé; negative Níor chnag mé; question Ar chnag mé?. Future: Cnagfaidh mé; negative Ní chnagfaidh mé; question An gcnagfaidh mé?.

What is the modh coinníollach of cnag?

The conditional (modh coinníollach) first person is Chnagfainn (I would knock); negative Ní chnagfainn; question An gcnagfainn?.

Does cnag have more than one meaning?

Yes. Cnag can mean to knock, to crack or to hit, depending on context; the first is the most common.

Which preposition do I use with 'cnag' for knocking on a door?

Use 'ar': 'Chnag sé ar an doras' means 'He knocked on the door'.

How is 'cnag' different from 'buail'?

'Buail' is the general word for hit or strike, while 'cnag' suggests a sharp knock or a crack, as in 'cnag cnó', to crack a nut.

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