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Thief in Irish (Gadaí): Meaning, Pronunciation, Usage

The Irish for thief is gadaí, a masculine noun (plural gadaithe).
Updated October 2026Report a mistake

How to say “thief” in Irish

Irish:
gadaí
English:
thief
Word type:
noun
Gender:
masculine, fourth declension
Pronunciation:
“GAD-ee”  /ˈɡadˠiː/
Various forms
Plural:
gadaithe (thieves)
Genitive singular:
gadaí, an ghadaí (e.g. ainm an ghadaí, the thief's name)
Genitive plural:
gadaithe, na ngadaithe (e.g. uaimh na ngadaithe, the thieves' cave)

What does “gadaí” mean?

thief
A person who steals things belonging to others.Also: robber, burglar, crook.

Other Irish words for thief: meirleach (robber), bradaí (thief), robálaí (robber)

“Gadaí” with the article

The plural of thief in Irish is gadaithe. Here is gadaí after the article (an t-alt), in the singular and the plural.

an gadaí
the thief
No change after an
na gadaithe
the thieves
Plural: no change after na

“Gadaí” in a sentence: Irish examples

Common Irish sentences using gadaí, the Irish word for thief.

Is gadaí é, ná creid focal uaidh.
He's a thief, don't believe a word he says.
Rug na gardaí ar an ngadaí aréir.
The guards caught the thief last night.
Bhris gadaithe isteach sa teach inné.
Thieves broke into the house yesterday.
Chonaic mé aghaidh an ghadaí go soiléir.
I saw the thief's face clearly.
Tá eagla uirthi roimh ghadaithe san oíche.
She's afraid of thieves at night.
Rith an gadaí síos an tsráid.
The thief ran down the street.
Ghoid gadaí mo rothar ón scoil.
A thief stole my bike from the school.

Other nouns in Irish

More everyday Irish nouns to learn next.

Thief in Irish: frequently asked questions

What is the Irish for thief?

The Irish for thief is gadaí (pronounced “GAD-ee”). It’s a masculine noun and the plural is gadaithe.

How do you pronounce gadaí in Irish?

Gadaí is said like “GAD-ee” (IPA /ˈɡadˠiː/).

What is the plural of thief in Irish?

The plural of gadaí is gadaithe; with the article, na gadaithe means “the thieves”. The genitive plural is gadaithe, as in uaimh na ngadaithe (the thieves' cave).

Why does gadaí change to ghadaí or ngadaí?

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

What is the difference between 'gadaí' and 'goid'?

'Gadaí' is the person, a thief, while 'goid' is the act of stealing, as in 'Ghoid sé an t-airgead' (he stole the money).

Is there a saying about thieves in Irish?

Yes: 'Aithníonn gadaí gadaí', meaning a thief recognises a thief, used like 'it takes one to know one'.

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