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Lunatic in Irish (Gealtán): Meaning, Pronunciation, Usage

The Irish for lunatic is gealtán, a masculine noun (plural gealtáin).
Updated October 2026Report a mistake

How to say “lunatic” in Irish

Irish:
gealtán
English:
lunatic
Word type:
noun
Gender:
masculine
Pronunciation:
“GYAL-tawn”  /ˈɟalˠt̪ˠɑːnˠ/
Various forms
Plural:
gealtáin (lunatics)
Genitive singular:
gealtáin, an ghealtáin (e.g. iompar an ghealtáin, the lunatic's behaviour)
Genitive plural:
gealtán, na ngealtán (e.g. iompar na ngealtán, the lunatics' behaviour)

What does “gealtán” mean?

lunatic
A crazy or mad person; often used loosely of someone acting wildly or foolishly.Also: madman, crazy person, maniac, nutcase.

Other Irish words for lunatic: gealt (lunatic), gealtach (madman)

“Gealtán” with the article

The plural of lunatic in Irish is gealtáin. Here is gealtán after the article (an t-alt), in the singular and the plural.

an gealtán
the lunatic
No change after an
na gealtáin
the lunatics
Plural: no change after na

“Gealtán” in a sentence: Irish examples

Common Irish sentences using gealtán, the Irish word for lunatic.

Tá sé ag tiomáint mar ghealtán.
He's driving like a lunatic.
Ná bí i do ghealtán!
Don't be a lunatic!
Bhí an gealtán ag béicíl ar an tsráid.
The madman was shouting in the street.
Is gealtán ceart é an fear sin.
That man is a real lunatic.
Bhí na gealtáin sin ag rith timpeall na páirce.
Those lunatics were running around the field.
Níor thug aon duine aird ar chaint an ghealtáin.
Nobody paid attention to the lunatic's talk.
Cheap siad gur gealtán mé.
They thought I was crazy.

Other nouns in Irish

More everyday Irish nouns to learn next.

Lunatic in Irish: frequently asked questions

What is the Irish for lunatic?

The Irish for lunatic is gealtán (pronounced “GYAL-tawn”). It’s a masculine noun and the plural is gealtáin.

How do you pronounce gealtán in Irish?

Gealtán is said like “GYAL-tawn” (IPA /ˈɟalˠt̪ˠɑːnˠ/).

What is the plural of lunatic in Irish?

The plural of gealtán is gealtáin; with the article, na gealtáin means “the lunatics”. The genitive plural is gealtán, as in iompar na ngealtán (the lunatics' behaviour).

Why does gealtán change to ghealtán or ngealtán?

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

What is the difference between 'gealtán' and 'gealt'?

'Gealt' is the basic word for a mad person (also 'ar gealt', mad), while 'gealtán' is a derived form often used more loosely or colloquially for a lunatic or crazy person.

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