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Confirmation in Irish (Deimhniú): Meaning, Pronunciation, Usage

‘deimhniú’ also means: certificate · certainty

The Irish for confirmation is deimhniú, a masculine noun (plural deimhnithe). Ag deimhniú is confirming, from the verb deimhnigh.
Updated October 2026Report a mistake

How to say “confirmation” in Irish

Irish:
deimhniú
English:
confirmation, certificate, certainty
Word type:
noun (verbal noun)
Verbal noun of:
deimhnigh, to confirm (ag deimhniú, confirming)
Gender:
masculine
Pronunciation:
“DEV-noo”  /ˈdʲevʲnʲuː/
Various forms
Plural:
deimhnithe (confirmations)
Genitive singular:
deimhnithe, an deimhnithe (e.g. dáta an deimhnithe, the date of confirmation)
Genitive plural:
deimhnithe, na ndeimhnithe (e.g. liosta na ndeimhnithe, the list of confirmations)

What does “deimhniú” mean?

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

confirmation
The act of confirming or affirming something; the verbal noun of the verb 'deimhnigh'.Also: affirmation, verification, assertion.
2 other meanings: certificate or certainty
2certificate
An official document stating that something is true, such as a qualification or a birth.Also: certification, cert.
3certainty
Proof or assurance that something is so.Also: assurance, proof.

Other Irish words for confirmation: cinntiú (confirmation), cóineartú (confirmation)

“Deimhniú” as a verbal noun

After ag, deimhniú means confirming: it is the verbal noun of the verb deimhnigh (to confirm). A noun that follows it goes into the genitive.

agat
+
deimhniúverbal noun
=
ag deimhniúconfirming

“Deimhniú” with the article

The plural of confirmation in Irish is deimhnithe. Here is deimhniú after the article (an t-alt), in the singular and the plural.

an deimhniú
the confirmation
No change after an
na deimhnithe
the confirmations
Plural: no change after na

“Deimhniú” in a sentence: Irish examples

Common Irish sentences using deimhniú, the Irish word for confirmation.

Fuair mé deimhniú ón mbanc inniu.
I got confirmation from the bank today.
Tá an deimhniú breithe sa tarraiceán.
The birth certificate is in the drawer.
Cuir chugam ríomhphost mar dheimhniú, le do thoil.
Send me an email as confirmation, please.
Bronnadh na deimhnithe ar na mic léinn inné.
The certificates were presented to the students yesterday.
Chaill mé mo dheimhniú árachais.
I lost my insurance certificate.
Níl aon dáta scríofa ar an deimhniú.
There is no date written on the certificate.
Táimid ag fanacht le deimhniú ón ospidéal.
We are waiting for confirmation from the hospital.

Other nouns in Irish

More everyday Irish nouns to learn next.

Confirmation in Irish: frequently asked questions

What is the Irish for confirmation?

The Irish for confirmation is deimhniú (pronounced “DEV-noo”). It’s a masculine noun and the plural is deimhnithe. Depending on context it can also mean certificate or certainty.

How do you pronounce deimhniú in Irish?

Deimhniú is said like “DEV-noo” (IPA /ˈdʲevʲnʲuː/).

What is the plural of confirmation in Irish?

The plural of deimhniú is deimhnithe; with the article, na deimhnithe means “the confirmations”. The genitive plural is deimhnithe, as in liosta na ndeimhnithe (the list of confirmations).

Does deimhniú have more than one meaning?

Yes. Deimhniú can mean confirmation, certificate or certainty, depending on context; the first is the most common.

Why does deimhniú change to dheimhniú or ndeimhniú?

Irish changes the start of some words after certain words. After mo (my) deimhniú becomes mo dheimhniú (lenition), and after ár (our) or i (in) it becomes ár ndeimhniú (eclipsis).

What is the difference between 'deimhniú' and 'teastas'?

Both can mean certificate: 'teastas' is often used for educational qualifications (Teastas Sóisearach), while 'deimhniú' is used for official records such as 'deimhniú breithe'.

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