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Allergen in Irish (Ailléirgin): Meaning, Pronunciation, Usage

The Irish for allergen is ailléirgin, a feminine noun (plural ailléirginí).
Updated October 2026Report a mistake

How to say “allergen” in Irish

Irish:
ailléirgin
English:
allergen
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“AL-ayr-gin”  /ˈalʲeːɾʲɟɪnʲ/
Various forms
Plural:
ailléirginí (allergens)
Genitive singular:
ailléirgine, na hailléirgine (e.g. éifeacht na hailléirgine, the effect of the allergen)
Genitive plural:
ailléirginí, na n-ailléirginí (e.g. liosta na n-ailléirginí, the list of the allergens)

What does “ailléirgin” mean?

allergen
A substance, such as pollen or dust, that causes an allergic reaction in some people.Also: allergy trigger, allergenic substance.

“Ailléirgin” with the article

The plural of allergen in Irish is ailléirginí. Here is ailléirgin after the article (an t-alt), in the singular and the plural.

an ailléirgin
the allergen
No change: feminine nouns starting with a vowel keep their form after an
na hailléirginí
the allergens
Plural: na adds h before a vowel

“Ailléirgin” in a sentence: Irish examples

Common Irish sentences using ailléirgin, the Irish word for allergen.

Is ailléirgin choitianta é pailin.
Pollen is a common allergen.
Ní mór an ailléirgin a sheachaint.
The allergen must be avoided.
Tá ailléirginí luaite ar an mbiachlár.
Allergens are listed on the menu.
Rinne an dochtúir tástáil ar na hailléirginí.
The doctor tested for the allergens.
Cén ailléirgin is cúis leis an ngríos?
Which allergen is causing the rash?
Tá cnónna ar cheann de na hailléirginí is mó.
Nuts are one of the main allergens.
Fuarthas rian den ailléirgin sa bhia.
A trace of the allergen was found in the food.

Other nouns in Irish

More everyday Irish nouns to learn next.

Allergen in Irish: frequently asked questions

What is the Irish for allergen?

The Irish for allergen is ailléirgin (pronounced “AL-ayr-gin”). It’s a feminine noun and the plural is ailléirginí.

How do you pronounce ailléirgin in Irish?

Ailléirgin is said like “AL-ayr-gin” (IPA /ˈalʲeːɾʲɟɪnʲ/).

What is the plural of allergen in Irish?

The plural of ailléirgin is ailléirginí; with the article, na hailléirginí means “the allergens”. The genitive plural is ailléirginí, as in liosta na n-ailléirginí (the list of the allergens).

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

Irish nouns beginning with a vowel take a prefix after certain words: an ailléirgin (the allergen), a hailléirgin (her allergen), a n-ailléirgin (their allergen), na hailléirginí (the allergens).

What is the difference between ailléirgin and ailléirge?

Ailléirgin is the substance that triggers the reaction, while ailléirge is the allergy itself: tá ailléirge orm le pailin, pollen is the ailléirgin.

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