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Certificate in Irish (Teastas): Meaning, Pronunciation, Usage

‘teastas’ also means: testimony

The Irish for certificate is teastas, a masculine noun (plural teastais).
Updated October 2026Report a mistake

How to say “certificate” in Irish

Irish:
teastas
English:
certificate, testimony
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“TYAS-tuss”  /tʲasˠt̪ˠəsˠ/
Various forms
Plural:
teastais (certificates)
Genitive singular:
teastais, an teastais (e.g. ainm an teastais, name of the certificate)
Genitive plural:
teastas, na dteastas (e.g. bronnadh na dteastas, the presentation of the certificates)

What does “teastas” mean?

“Teastas” has two alternative meanings. The most common comes first.

certificate
An official document stating that something is true, such as that a person passed an exam or completed a course.Also: cert, diploma, testimonial.
1 other meaning: testimony
2testimony
A statement or evidence given in support of a fact or of a person's character.Also: testimonial, attestation, evidence.

Other Irish words for certificate: dioplóma (diploma)

“Teastas” with the article

The plural of certificate in Irish is teastais. Here is teastas after the article (an t-alt), in the singular and the plural.

an teastas
the certificate
No change after an
na teastais
the certificates
Plural: no change after na

“Teastas” in a sentence: Irish examples

Common Irish sentences using teastas, the Irish word for certificate.

Fuair mé teastas ag deireadh an chúrsa.
I got a certificate at the end of the course.
Tá an teastas crochta ar an mballa.
The certificate is hanging on the wall.
Cá bhfuil cóip de do theastas breithe?
Where is a copy of your birth certificate?
Bronnadh teastais ar na daltaí inné.
Certificates were presented to the pupils yesterday.
Chaill mé mo theastas scoile.
I lost my school certificate.
Tá d'ainm litrithe mícheart sa teastas.
Your name is spelled wrong on the certificate.
Ní raibh teastas leighis aige, fiú.
He didn't even have a medical certificate.

Other nouns in Irish

More everyday Irish nouns to learn next.

Certificate in Irish: frequently asked questions

What is the Irish for certificate?

The Irish for certificate is teastas (pronounced “TYAS-tuss”). It’s a masculine noun and the plural is teastais. Depending on context it can also mean testimony.

How do you pronounce teastas in Irish?

Teastas is said like “TYAS-tuss” (IPA /tʲasˠt̪ˠəsˠ/).

What is the plural of certificate in Irish?

The plural of teastas is teastais; with the article, na teastais means “the certificates”. The genitive plural is teastas, as in bronnadh na dteastas (the presentation of the certificates).

Does teastas have more than one meaning?

Yes. Teastas can mean certificate or testimony, depending on context; the first is the most common.

Why does teastas change to theastas or dteastas?

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

Is 'teastas' the word for a driving licence?

The usual word for a licence is 'ceadúnas', so a driving licence is 'ceadúnas tiomána', though 'teastas tiomána' is also heard. 'Teastas' properly means a certificate.

What is the Leaving Certificate in Irish?

It is 'an Ardteistiméireacht', not a phrase with 'teastas', while the old Junior Certificate was 'an Teastas Sóisearach'.

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