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Acid in Irish (Aigéad): Meaning, Pronunciation, Usage

The Irish for acid is aigéad, a masculine noun (plural aigéid).
Updated October 2026Report a mistake

How to say “acid” in Irish

Irish:
aigéad
English:
acid
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“AG-ayd”  /ˈaɟeːd̪ˠ/
Various forms
Plural:
aigéid (acids)
Genitive singular:
aigéid, an aigéid (e.g. neart an aigéid, the strength of the acid)
Genitive plural:
aigéad, na n-aigéad (e.g. airíonna na n-aigéad, the properties of the acids)

What does “aigéad” mean?

acid
A chemical substance, often sour or corrosive, that has a pH below seven and reacts with bases.Also: acidic substance, corrosive.

“Aigéad” with the article

The plural of acid in Irish is aigéid. Here is aigéad after the article (an t-alt), in the singular and the plural.

an t-aigéad
the acid
Masculine nouns take t before a vowel after an
na haigéid
the acids
Plural: na adds h before a vowel

“Aigéad” in a sentence: Irish examples

Common Irish sentences using aigéad, the Irish word for acid.

Is aigéad láidir é seo.
This is a strong acid.
Ná leag do lámh ar an aigéad.
Don't touch the acid.
Bhí boladh an aigéid sa seomra.
There was a smell of acid in the room.
Tá aigéid éagsúla sa tsaotharlann.
There are various acids in the laboratory.
Dhóigh an t-aigéad poll sa bhord.
The acid burned a hole in the table.
Cuir an t-aigéad isteach sa phromhadán go cúramach.
Put the acid into the test tube carefully.
Tá aigéad i sú líomóide.
There is acid in lemon juice.

Other nouns in Irish

More everyday Irish nouns to learn next.

Acid in Irish: frequently asked questions

What is the Irish for acid?

The Irish for acid is aigéad (pronounced “AG-ayd”). It’s a masculine noun and the plural is aigéid.

How do you pronounce aigéad in Irish?

Aigéad is said like “AG-ayd” (IPA /ˈaɟeːd̪ˠ/).

What is the plural of acid in Irish?

The plural of aigéad is aigéid; with the article, na haigéid means “the acids”. The genitive plural is aigéad, as in airíonna na n-aigéad (the properties of the acids).

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

Irish nouns beginning with a vowel take a prefix after certain words: an t-aigéad (the acid), a haigéad (her acid), a n-aigéad (their acid), na haigéid (the acids).

What is the adjective from 'aigéad'?

The adjective is 'aigéadach', meaning acidic, as in 'báisteach aigéadach' (acid rain).

Is 'aigéad' the same as 'aigéan'?

No. 'Aigéad' means acid, while 'aigéan' means ocean; the words look alike but are unrelated.

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