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Adjective in Irish (Aidiacht): Meaning, Pronunciation, Usage

The Irish for adjective is aidiacht, a feminine noun (plural aidiachtaí).
Updated October 2026Report a mistake

How to say “adjective” in Irish

Irish:
aidiacht
English:
adjective
Word type:
noun
Gender:
feminine, third declension
Pronunciation:
“AD-jee-akht”  /ˈadʲiəxt̪ˠ/
Various forms
Plural:
aidiachtaí (adjectives)
Genitive singular:
aidiachta, na haidiachta (e.g. foirm na haidiachta, the form of the adjective)
Genitive plural:
aidiachtaí, na n-aidiachtaí (e.g. liosta na n-aidiachtaí, the list of adjectives)

What does “aidiacht” mean?

adjective
A word that describes a noun, such as 'mór' (big) or 'dearg' (red).Also: describing word.

“Aidiacht” with the article

The plural of adjective in Irish is aidiachtaí. Here is aidiacht after the article (an t-alt), in the singular and the plural.

an aidiacht
the adjective
No change: feminine nouns starting with a vowel keep their form after an
na haidiachtaí
the adjectives
Plural: na adds h before a vowel

“Aidiacht” in a sentence: Irish examples

Common Irish sentences using aidiacht, the Irish word for adjective.

Is aidiacht é an focal 'álainn'.
The word 'álainn' is an adjective.
Tagann an aidiacht i ndiaidh an ainmfhocail sa Ghaeilge.
The adjective comes after the noun in Irish.
Réitíonn an t-ainmfhocal agus an aidiacht ó thaobh inscne de.
The noun and the adjective agree in gender.
Scríobh síos cúig aidiacht a dhéanann cur síos ort féin.
Write down five adjectives that describe you.
Tá na haidiachtaí sa dara habairt mícheart.
The adjectives in the second sentence are wrong.
Cad é foirm iolra na haidiachta seo?
What is the plural form of this adjective?
Chuir an múinteoir béim ar aidiachtaí sa rang inniu.
The teacher emphasised adjectives in class today.

Other nouns in Irish

More everyday Irish nouns to learn next.

Adjective in Irish: frequently asked questions

What is the Irish for adjective?

The Irish for adjective is aidiacht (pronounced “AD-jee-akht”). It’s a feminine noun and the plural is aidiachtaí.

How do you pronounce aidiacht in Irish?

Aidiacht is said like “AD-jee-akht” (IPA /ˈadʲiəxt̪ˠ/).

What is the plural of adjective in Irish?

The plural of aidiacht is aidiachtaí; with the article, na haidiachtaí means “the adjectives”. The genitive plural is aidiachtaí, as in liosta na n-aidiachtaí (the list of adjectives).

Why does aidiacht sometimes have a t or h in front of it?

Irish nouns beginning with a vowel take a prefix after certain words: an aidiacht (the adjective), a haidiacht (her adjective), a n-aidiacht (their adjective), na haidiachtaí (the adjectives).

Where does the adjective go in an Irish phrase?

Most adjectives follow the noun, as in 'teach mór' (a big house), and after a feminine singular noun they are lenited: 'bean mhór'.

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