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Traitor in Irish (Fealltóir): Meaning, Pronunciation, Usage

The Irish for traitor is fealltóir, a masculine noun (plural fealltóirí).
Updated October 2026Report a mistake

How to say “traitor” in Irish

Irish:
fealltóir
English:
traitor
Word type:
noun
Gender:
masculine, third declension
Pronunciation:
“FYAL-toh-ir”  /ˈfʲal̪ˠt̪ˠoːɾʲ/
Various forms
Plural:
fealltóirí (traitors)
Genitive singular:
fealltóra, an fhealltóra (e.g. ainm an fhealltóra, the traitor's name)
Genitive plural:
fealltóirí, na bhfealltóirí (e.g. liosta na bhfealltóirí, the list of traitors)

What does “fealltóir” mean?

traitor
A person who betrays their country, cause, friends or trust.Also: betrayer, turncoat, treacherous person.

“Fealltóir” with the article

The plural of traitor in Irish is fealltóirí. Here is fealltóir after the article (an t-alt), in the singular and the plural.

an fealltóir
the traitor
No change after an
na fealltóirí
the traitors
Plural: no change after na

“Fealltóir” in a sentence: Irish examples

Common Irish sentences using fealltóir, the Irish word for traitor.

Fealltóir a bhí ann ó thús.
He was a traitor from the start.
Rug na saighdiúirí ar an bhfealltóir.
The soldiers caught the traitor.
Níor maitheadh riamh don fhealltóir.
The traitor was never forgiven.
Cuireadh na fealltóirí go léir i bpríosún.
All the traitors were put in prison.
Ghlaoigh sé fealltóir orm os comhair cách.
He called me a traitor in front of everyone.
Bhí fealltóir i measc an ghrúpa.
There was a traitor among the group.
Ní fhéadfainn a chreidiúint gur fealltóir é mo chara.
I couldn't believe that my friend was a traitor.

Other nouns in Irish

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Traitor in Irish: frequently asked questions

What is the Irish for traitor?

The Irish for traitor is fealltóir (pronounced “FYAL-toh-ir”). It’s a masculine noun and the plural is fealltóirí.

How do you pronounce fealltóir in Irish?

Fealltóir is said like “FYAL-toh-ir” (IPA /ˈfʲal̪ˠt̪ˠoːɾʲ/).

What is the plural of traitor in Irish?

The plural of fealltóir is fealltóirí; with the article, na fealltóirí means “the traitors”. The genitive plural is fealltóirí, as in liosta na bhfealltóirí (the list of traitors).

Why does fealltóir change to fhealltóir or bhfealltóir?

Irish changes the start of some words after certain words. After mo (my) fealltóir becomes m'fhealltóir (lenition), and after ár (our) or i (in) it becomes ár bhfealltóir (eclipsis).

What is the difference between fealltóir and tréatúir?

Both mean traitor; fealltóir comes from feall (treachery, betrayal) and is used generally, while tréatúir is especially used for someone who commits tréas (treason) against a state.

What word is fealltóir built on?

It comes from feall, meaning treachery or deceit, as in the saying 'Filleann an feall ar an bhfeallaire' (treachery returns on the traitor).

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