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Onion in Irish (Oinniún): Meaning, Pronunciation, Usage

The Irish for onion is oinniún, a masculine noun (plural oinniúin).
Updated October 2026Report a mistake

How to say “onion” in Irish

Irish:
oinniún
English:
onion
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“in-YOON”  /ɪˈnʲuːnˠ/
Various forms
Plural:
oinniúin (onions)
Genitive singular:
oinniúin, an oinniúin (e.g. craiceann an oinniúin, the skin of the onion)
Genitive plural:
oinniún, na n-oinniún (e.g. mála oinniún, a bag of onions)

What does “oinniún” mean?

onion
A round vegetable with a strong smell and taste, made of layers, used a lot in cooking.Also: onions, bulb onion.

“Oinniún” with the article

The plural of onion in Irish is oinniúin. Here is oinniún after the article (an t-alt), in the singular and the plural.

an t-oinniún
the onion
Masculine nouns take t before a vowel after an
na hoinniúin
the onions
Plural: na adds h before a vowel

“Oinniún” in a sentence: Irish examples

Common Irish sentences using oinniún, the Irish word for onion.

Bain an craiceann den oinniún agus gearr ina shlisní é.
Peel the onion and cut it in slices.
Ceannaigh oinniún agus cúpla práta sa siopa.
Buy an onion and a few potatoes in the shop.
Cuireann na hoinniúin deora le mo shúile.
The onions make my eyes water.
Tá boladh an oinniúin ar fud na cistine.
The smell of the onion is all over the kitchen.
Ní maith le mo dheartháir oinniúin ar chor ar bith.
My brother doesn't like onions at all.
Fásaimid oinniúin sa ghairdín gach bliain.
We grow onions in the garden every year.
Cuir píosa oinniúin san anraith.
Put a bit of onion in the soup.

Other nouns in Irish

More everyday Irish nouns to learn next.

Onion in Irish: frequently asked questions

What is the Irish for onion?

The Irish for onion is oinniún (pronounced “in-YOON”). It’s a masculine noun and the plural is oinniúin.

How do you pronounce oinniún in Irish?

Oinniún is said like “in-YOON” (IPA /ɪˈnʲuːnˠ/).

What is the plural of onion in Irish?

The plural of oinniún is oinniúin; with the article, na hoinniúin means “the onions”. The genitive plural is oinniún, as in mála oinniún (a bag of onions).

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

Irish nouns beginning with a vowel take a prefix after certain words: an t-oinniún (the onion), a hoinniún (her onion), a n-oinniún (their onion), na hoinniúin (the onions).

What is a spring onion in Irish?

A spring onion is 'oinniún earraigh', literally 'spring onion'; 'scallóid' is also used for scallion.

Is 'oinniún' the same as 'gairleog'?

No: 'oinniún' is onion, while 'gairleog' is garlic.

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