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To separate in Irish (dealaigh): Meaning, Conjugation, Examples

Other uses of ‘dealaigh’: subtract · distinguish · depart

The Irish for to separate is dealaigh; ag dealú is separating.
Updated October 2026Report a mistake

How to say “to separate” in Irish

Irish:
dealaigh
English:
to separate, subtract, distinguish, depart
Word type:
verb, second-conjugation
Verbal noun:
dealú (ag dealú, separating)
Verbal adjective:
dealaithe
Pronunciation:
“DAL-ee”  /ˈdʲalˠə/

What does “dealaigh” mean?

“Dealaigh” has four alternative meanings. The most common comes first.

to separate
To part or divide one thing or person from another.Also: part, divide, detach.
3 other meanings: subtract or distinguish or depart
2to subtract
To take one number away from another in arithmetic.Also: take away, deduct.
3to distinguish
To tell things apart or mark the difference between them.Also: differentiate, tell apart.
4to depart
To go away or part company from someone.Also: part from, leave.

Other Irish verbs for to separate: scar (separate)

“Dealaigh” in the different tenses

Every form follows An Caighdeán Oifigiúil.

Aimsir Chaite (Past)

PersonPositiveNegativeQuestion
mé (I)Dhealaigh méI separatedNíor dhealaigh méI did not separateAr dhealaigh mé?Did I separate?
tú (you)Dhealaigh túYou separatedNíor dhealaigh túYou did not separateAr dhealaigh tú?Did you separate?
sé / sí (he / she)Dhealaigh sé / síHe separatedNíor dhealaigh sé / síHe did not separateAr dhealaigh sé / sí?Did he separate?
sinn (we)DhealaíomarWe separatedNíor dhealaíomarWe did not separateAr dhealaíomar?Did we separate?
sibh (you, plural)Dhealaigh sibhYou separatedNíor dhealaigh sibhYou did not separateAr dhealaigh sibh?Did you separate?
siad (they)Dhealaigh siadThey separatedNíor dhealaigh siadThey did not separateAr dhealaigh siad?Did they separate?
saorbhriathar (autonomous)DealaíodhNíor dealaíodhAr dealaíodh?

Aimsir Láithreach (Present)

PersonPositiveNegativeQuestion
mé (I)DealaímI separateNí dhealaímI do not separateAn ndealaím?Do I separate?
tú (you)Dealaíonn túYou separateNí dhealaíonn túYou do not separateAn ndealaíonn tú?Do you separate?
sé / sí (he / she)Dealaíonn sé / síHe separatesNí dhealaíonn sé / síHe does not separateAn ndealaíonn sé / sí?Does he separate?
sinn (we)DealaímidWe separateNí dhealaímidWe do not separateAn ndealaímid?Do we separate?
sibh (you, plural)Dealaíonn sibhYou separateNí dhealaíonn sibhYou do not separateAn ndealaíonn sibh?Do you separate?
siad (they)Dealaíonn siadThey separateNí dhealaíonn siadThey do not separateAn ndealaíonn siad?Do they separate?
saorbhriathar (autonomous)DealaítearNí dhealaítearAn ndealaítear?

Aimsir Fháistineach (Future)

PersonPositiveNegativeQuestion
mé (I)Dealóidh méI will separateNí dhealóidh méI will not separateAn ndealóidh mé?Will I separate?
tú (you)Dealóidh túYou will separateNí dhealóidh túYou will not separateAn ndealóidh tú?Will you separate?
sé / sí (he / she)Dealóidh sé / síHe will separateNí dhealóidh sé / síHe will not separateAn ndealóidh sé / sí?Will he separate?
sinn (we)DealóimidWe will separateNí dhealóimidWe will not separateAn ndealóimid?Will we separate?
sibh (you, plural)Dealóidh sibhYou will separateNí dhealóidh sibhYou will not separateAn ndealóidh sibh?Will you separate?
siad (they)Dealóidh siadThey will separateNí dhealóidh siadThey will not separateAn ndealóidh siad?Will they separate?
saorbhriathar (autonomous)DealófarNí dhealófarAn ndealófar?

Modh Coinníollach (Conditional)

PersonPositiveNegativeQuestion
mé (I)DhealóinnI would separateNí dhealóinnI would not separateAn ndealóinn?Would I separate?
tú (you)DhealófáYou would separateNí dhealófáYou would not separateAn ndealófá?Would you separate?
sé / sí (he / she)Dhealódh sé / síHe would separateNí dhealódh sé / síHe would not separateAn ndealódh sé / sí?Would he separate?
sinn (we)DhealóimisWe would separateNí dhealóimisWe would not separateAn ndealóimis?Would we separate?
sibh (you, plural)Dhealódh sibhYou would separateNí dhealódh sibhYou would not separateAn ndealódh sibh?Would you separate?
siad (they)DhealóidísThey would separateNí dhealóidísThey would not separateAn ndealóidís?Would they separate?
saorbhriathar (autonomous)DhealófaíNí dhealófaíAn ndealófaí?

“Dealaigh” in a sentence: Irish examples

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

Dhealaigh an múinteoir an bheirt bhuachaillí óna chéile.
The teacher separated the two boys from each other.
Dealaíonn an meaisín an t-uachtar ón mbainne.
The machine separates the cream from the milk.
Dealóidh tú a cúig ó dheich.
You will subtract five from ten.
Dhealódh sí na buachaillí dá mbeidís ag troid.
She would separate the boys if they were fighting.
Níor dhealaigh siad riamh óna chéile.
They never parted from each other.
Ar dhealaigh tú an uimhir sin cheana?
Did you subtract that number already?

Other verbs in Irish

More everyday Irish verbs to learn next.

To separate in Irish: frequently asked questions

What is the Irish for to separate?

The Irish for to separate is dealaigh (pronounced “DAL-ee”). It is a second-conjugation verb; the verbal noun is dealú.

What is the verbal noun of dealaigh?

The verbal noun of dealaigh is dealú, used after ag for the continuous: ag dealú (separating). The verbal adjective is dealaithe.

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

Past: Dhealaigh mé; negative Níor dhealaigh mé; question Ar dhealaigh mé?. Future: Dealóidh mé; negative Ní dhealóidh mé; question An ndealóidh mé?.

What is the modh coinníollach of dealaigh?

The conditional (modh coinníollach) first person is Dhealóinn (I would separate); negative Ní dhealóinn; question An ndealóinn?.

Does dealaigh have more than one meaning?

Yes. Dealaigh can mean to separate, to subtract, to distinguish or to depart, depending on context; the first is the most common.

What preposition does 'dealaigh' take?

It usually takes 'ó': dealaigh a trí ó a seacht, subtract three from seven. 'Dealaigh le' means to part with something.

How is 'dealaigh' different from 'scar'?

Both mean separate, but 'scar' is more common for people parting or spreading things out, while 'dealaigh' is also the standard word for subtract in maths.

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