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Irritant in Irish (Greannaitheoir): Meaning, Pronunciation, Usage

The Irish for irritant is greannaitheoir, a masculine noun (plural greannaitheoirí).
Updated October 2026Report a mistake

How to say “irritant” in Irish

Irish:
greannaitheoir
English:
irritant
Word type:
noun
Gender:
masculine
Pronunciation:
“GRYAN-uh-hor”  /ˈɟɾʲanˠəhoːɾʲ/
Various forms
Plural:
greannaitheoirí (irritants)
Genitive singular:
greannaitheora, an ghreannaitheora (e.g. éifeacht an ghreannaitheora, the effect of the irritant)
Genitive plural:
greannaitheoirí, na ngreannaitheoirí (e.g. éifeacht na ngreannaitheoirí, the effect of the irritants)

What does “greannaitheoir” mean?

irritant
Something, such as a substance, that causes irritation, especially of the skin or eyes; from the verb greannaigh, to irritate or provoke.Also: provoker, irritating substance.

“Greannaitheoir” with the article

The plural of irritant in Irish is greannaitheoirí. Here is greannaitheoir after the article (an t-alt), in the singular and the plural.

an greannaitheoir
the irritant
No change after an
na greannaitheoirí
the irritants
Plural: no change after na

“Greannaitheoir” in a sentence: Irish examples

Common Irish sentences using greannaitheoir, the Irish word for irritant.

Is greannaitheoir láidir í an tsubstaint seo.
This substance is a strong irritant.
Ghortaigh an greannaitheoir a súile.
The irritant hurt her eyes.
Nigh do lámha chun an greannaitheoir a bhaint díot.
Wash your hands to remove the irritant.
Tá greannaitheoirí i roinnt táirgí glantacháin.
There are irritants in some cleaning products.
Ní fios cén greannaitheoir is cúis leis an ngríos.
It is not known which irritant causes the rash.
Tá rabhadh faoin ngreannaitheoir ar an mbuidéal.
There is a warning about the irritant on the bottle.
Seachain teagmháil leis na greannaitheoirí sin.
Avoid contact with those irritants.

Other nouns in Irish

More everyday Irish nouns to learn next.

Irritant in Irish: frequently asked questions

What is the Irish for irritant?

The Irish for irritant is greannaitheoir (pronounced “GRYAN-uh-hor”). It’s a masculine noun and the plural is greannaitheoirí.

How do you pronounce greannaitheoir in Irish?

Greannaitheoir is said like “GRYAN-uh-hor” (IPA /ˈɟɾʲanˠəhoːɾʲ/).

What is the plural of irritant in Irish?

The plural of greannaitheoir is greannaitheoirí; with the article, na greannaitheoirí means “the irritants”. The genitive plural is greannaitheoirí, as in éifeacht na ngreannaitheoirí (the effect of the irritants).

Why does greannaitheoir change to ghreannaitheoir or ngreannaitheoir?

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

Is greannaitheoir related to greann, meaning fun?

No, despite the look, greannaitheoir comes from the verb greannaigh, to irritate or provoke, and has nothing to do with greann in the sense of humour. A comedian is fear grinn or fuirseoir.

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