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Complainant in Irish (Casaoideoir): Meaning, Pronunciation, Usage

The Irish for complainant is casaoideoir, a masculine noun (plural casaoideoirí).
Updated October 2026Report a mistake

How to say “complainant” in Irish

Irish:
casaoideoir
English:
complainant
Word type:
noun
Gender:
masculine
Pronunciation:
“KAS-ee-dyor”  /ˈkasˠiːdʲoːɾʲ/
Various forms
Plural:
casaoideoirí (complainants)
Genitive singular:
casaoideora, an chasaoideora (e.g. ainm an chasaoideora, the complainant's name)
Genitive plural:
casaoideoirí, na gcasaoideoirí (e.g. líon na gcasaoideoirí, the number of complainants)

What does “casaoideoir” mean?

complainant
A person who makes a complaint, especially a formal one to an authority or court.Also: complainer, plaintiff, person complaining.

“Casaoideoir” with the article

The plural of complainant in Irish is casaoideoirí. Here is casaoideoir after the article (an t-alt), in the singular and the plural.

an casaoideoir
the complainant
No change after an
na casaoideoirí
the complainants
Plural: no change after na

“Casaoideoir” in a sentence: Irish examples

Common Irish sentences using casaoideoir, the Irish word for complainant.

Ba é an casaoideoir a labhair ar dtús.
The complainant spoke first.
Níor tháinig an casaoideoir chun na cúirte.
The complainant did not come to court.
Scríobhadh litir chuig an gcasaoideoir inné.
A letter was written to the complainant yesterday.
Tá seoladh an chasaoideora sa chomhad.
The complainant's address is in the file.
Bhí triúr casaoideoirí ann san iomlán.
There were three complainants in total.
D'éist an tOmbudsman leis na casaoideoirí go léir.
The Ombudsman listened to all the complainants.
Is casaoideoir mé sa chás seo.
I am a complainant in this case.

Other nouns in Irish

More everyday Irish nouns to learn next.

Complainant in Irish: frequently asked questions

What is the Irish for complainant?

The Irish for complainant is casaoideoir (pronounced “KAS-ee-dyor”). It’s a masculine noun and the plural is casaoideoirí.

How do you pronounce casaoideoir in Irish?

Casaoideoir is said like “KAS-ee-dyor” (IPA /ˈkasˠiːdʲoːɾʲ/).

What is the plural of complainant in Irish?

The plural of casaoideoir is casaoideoirí; with the article, na casaoideoirí means “the complainants”. The genitive plural is casaoideoirí, as in líon na gcasaoideoirí (the number of complainants).

Why does casaoideoir change to chasaoideoir or gcasaoideoir?

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

What is the difference between casaoideoir and gearánaí?

Both mean someone who complains; casaoideoir, from casaoid, is the more formal or legal term, while gearánaí, from gearán, is common in everyday and official use.

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