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Trespasser in Irish (Treaspásóir): Meaning, Pronunciation, Usage

The Irish for trespasser is treaspásóir, a masculine noun (plural treaspásóirí).
Updated October 2026Report a mistake

How to say “trespasser” in Irish

Irish:
treaspásóir
English:
trespasser
Word type:
noun
Gender:
masculine
Pronunciation:
“TRAS-paw-sor”  /ˈtʲɾʲasˠpˠaːsˠoːɾʲ/
Various forms
Plural:
treaspásóirí (trespassers)
Genitive singular:
treaspásóra, an treaspásóra (e.g. ainm an treaspásóra, the trespasser's name)
Genitive plural:
treaspásóirí, na dtreaspásóirí (e.g. fógra in aghaidh treaspásóirí, a notice against trespassers)

What does “treaspásóir” mean?

trespasser
A person who goes onto someone else's land or property without permission.Also: intruder, interloper.

“Treaspásóir” with the article

The plural of trespasser in Irish is treaspásóirí. Here is treaspásóir after the article (an t-alt), in the singular and the plural.

an treaspásóir
the trespasser
No change after an
na treaspásóirí
the trespassers
Plural: no change after na

“Treaspásóir” in a sentence: Irish examples

Common Irish sentences using treaspásóir, the Irish word for trespasser.

Chonaic an feirmeoir treaspásóir ina pháirc aréir.
The farmer saw a trespasser in his field last night.
Cuirfear an dlí ar threaspásóirí.
Trespassers will be prosecuted.
Ghlaoigh sí ar na gardaí faoin treaspásóir.
She called the guards about the trespasser.
Níor aithin aon duine aghaidh an treaspásóra.
Nobody recognised the trespasser's face.
Bhí an madra ag tafann ar an treaspásóir.
The dog was barking at the trespasser.
Tá fógra ar an ngeata faoi threaspásóirí.
There is a sign on the gate about trespassers.
Ní treaspásóir mé, tá cead agam a bheith anseo.
I'm not a trespasser, I have permission to be here.

Other nouns in Irish

More everyday Irish nouns to learn next.

Trespasser in Irish: frequently asked questions

What is the Irish for trespasser?

The Irish for trespasser is treaspásóir (pronounced “TRAS-paw-sor”). It’s a masculine noun and the plural is treaspásóirí.

How do you pronounce treaspásóir in Irish?

Treaspásóir is said like “TRAS-paw-sor” (IPA /ˈtʲɾʲasˠpˠaːsˠoːɾʲ/).

What is the plural of trespasser in Irish?

The plural of treaspásóir is treaspásóirí; with the article, na treaspásóirí means “the trespassers”. The genitive plural is treaspásóirí, as in fógra in aghaidh treaspásóirí (a notice against trespassers).

Why does treaspásóir change to threaspásóir or dtreaspásóir?

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

What is the word for the act of trespassing?

The act is 'treaspás', and a person who does it is a 'treaspásóir'. In older or regional usage 'foghlaí' can also mean a trespasser or marauder.

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