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Complaint in Irish (Casaoid): Meaning, Pronunciation, Usage

‘casaoid’ also means: complaint (legal)

The Irish for complaint is casaoid, a feminine noun (plural casaoidí).
Updated October 2026Report a mistake

How to say “complaint” in Irish

Irish:
casaoid
English:
complaint, complaint (legal)
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“KAS-eed”  /ˈkasˠiːdʲ/
Various forms
Plural:
casaoidí (complaints)
Genitive singular:
casaoide, na casaoide (e.g. foirm na casaoide, the complaint form)
Genitive plural:
casaoidí, na gcasaoidí (e.g. líon na gcasaoidí, the number of complaints)

What does “casaoid” mean?

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

complaint
An expression of dissatisfaction or a grievance made about something or someone.Also: grievance, objection.
1 other meaning: complaint (legal)
2complaint (legal)
A formal accusation or charge made to an authority or court.Also: complaint, charge, accusation.

Other Irish words for complaint: gearán (complaint), clamhsán (complaint)

“Casaoid” with the article

The plural of complaint in Irish is casaoidí. Here is casaoid after the article (an t-alt), in the singular and the plural.

an chasaoid
the complaint
Lenition: c becomes ch after an (feminine noun)
na casaoidí
the complaints
Plural: no change after na

“Casaoid” in a sentence: Irish examples

Common Irish sentences using casaoid, the Irish word for complaint.

Rinne sí casaoid leis an mbainisteoir.
She made a complaint to the manager.
Níl aon chasaoid agam faoin mbia.
I have no complaint about the food.
Fuair an chomhairle a lán casaoidí an tseachtain seo.
The council got a lot of complaints this week.
Cuireadh an chasaoid faoi bhráid an Ombudsman.
The complaint was referred to the Ombudsman.
Cad faoi a raibh an chasaoid?
What was the complaint about?
Scríobh mé mo chasaoid i litir.
I wrote my complaint in a letter.
Déileálfar le casaoidí i gceann seachtaine.
Complaints will be dealt with within a week.

Other nouns in Irish

More everyday Irish nouns to learn next.

Complaint in Irish: frequently asked questions

What is the Irish for complaint?

The Irish for complaint is casaoid (pronounced “KAS-eed”). It’s a feminine noun and the plural is casaoidí. Depending on context it can also mean complaint (legal).

How do you pronounce casaoid in Irish?

Casaoid is said like “KAS-eed” (IPA /ˈkasˠiːdʲ/).

What is the plural of complaint in Irish?

The plural of casaoid is casaoidí; with the article, na casaoidí means “the complaints”. The genitive plural is casaoidí, as in líon na gcasaoidí (the number of complaints).

Does casaoid have more than one meaning?

Yes. Casaoid can mean complaint or complaint (legal), depending on context; the first is the most common.

Why does casaoid change to chasaoid or gcasaoid?

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

What is the difference between casaoid and gearán?

Both mean complaint; gearán is the more common everyday word, while casaoid is often more formal, as in casaoid fhoirmiúil (a formal complaint).

Which preposition do I use to complain to someone?

Use le for the person and faoi or i dtaobh for the matter: rinne sé casaoid leis an ngarda faoin torann.

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