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Proof in Irish (Cruthúnas): Meaning, Pronunciation, Usage

The Irish for proof is cruthúnas, a masculine noun.
Updated October 2026Report a mistake

How to say “proof” in Irish

Irish:
cruthúnas
English:
proof
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“KRU-hoo-nus”  /ˈkɾˠʊhuːn̪ˠəsˠ/
Various forms
Genitive singular:
cruthúnais, an chruthúnais (e.g. ualach an chruthúnais, the burden of proof)

What does “cruthúnas” mean?

proof
Evidence or a fact that shows something is true.Also: evidence, demonstration, confirmation.

Other Irish words for proof: fianaise (evidence)

“Cruthúnas” with the article

Here is cruthúnas after the article (an t-alt).

an cruthúnas
the proof
No change after an

“Cruthúnas” in a sentence: Irish examples

Common Irish sentences using cruthúnas, the Irish word for proof.

Is cruthúnas é seo go bhfuil an litir seolta agam.
This is proof that I have sent the letter.
Níl aon chruthúnas acu go raibh sé ann.
They have no proof that he was there.
Theastaigh cruthúnas aitheantais ón mbanc.
The bank wanted proof of identity.
Thaispeáin sí an cruthúnas don gharda.
She showed the proof to the guard.
Cá bhfuil do chruthúnas?
Where is your proof?
Tá an cruthúnas sa tuarascáil.
The proof is in the report.
Níl go leor cruthúnais ag na gardaí.
The guards don't have enough proof.

Other nouns in Irish

More everyday Irish nouns to learn next.

Proof in Irish: frequently asked questions

What is the Irish for proof?

The Irish for proof is cruthúnas (pronounced “KRU-hoo-nus”). It’s a masculine noun.

How do you pronounce cruthúnas in Irish?

Cruthúnas is said like “KRU-hoo-nus” (IPA /ˈkɾˠʊhuːn̪ˠəsˠ/).

Does cruthúnas have a plural?

No plural form is given for cruthúnas in the standard. Many abstract and mass nouns in Irish have no plural.

Why does cruthúnas change to chruthúnas or gcruthúnas?

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

What is the difference between cruthúnas and fianaise?

Cruthúnas is proof that settles a matter, while fianaise is evidence or testimony that supports it, as in a court.

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