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Catholicism in Irish (Caitliceachas): Meaning, Pronunciation, Usage

The Irish for Catholicism is Caitliceachas, a masculine noun.
Updated October 2026Report a mistake

How to say “Catholicism” in Irish

Irish:
Caitliceachas
English:
Catholicism
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“KAT-lik-uh-khus”  /ˈkatʲlʲɪcəxəsˠ/
Various forms
Genitive singular:
Caitliceachais, an Chaitliceachais (e.g. stair an Chaitliceachais, the history of Catholicism)

What does “Caitliceachas” mean?

Catholicism
The faith, teaching and practice of the Catholic Church.Also: Catholic faith, Roman Catholicism, Catholic religion.

“Caitliceachas” with the article

Here is Caitliceachas after the article (an t-alt).

an Caitliceachas
the Catholicism
No change after an

“Caitliceachas” in a sentence: Irish examples

Common Irish sentences using Caitliceachas, the Irish word for Catholicism.

Is é an Caitliceachas an creideamh is mó in Éirinn.
Catholicism is the biggest religion in Ireland.
Tá suim mhór aici i stair an Chaitliceachais.
She has a great interest in the history of Catholicism.
D'iompaigh sé ar an gCaitliceachas nuair a phós sé.
He converted to Catholicism when he married.
Rinneamar staidéar ar an gCaitliceachas ar scoil.
We studied Catholicism at school.
Bhí tionchar láidir ag an gCaitliceachas ar an tír.
Catholicism had a strong influence on the country.
Tá an Caitliceachas agus an Protastúnachas difriúil ar go leor bealaí.
Catholicism and Protestantism differ in many ways.
Labhair an sagart faoi theagasc an Chaitliceachais.
The priest spoke about the teaching of Catholicism.

Other nouns in Irish

More everyday Irish nouns to learn next.

Catholicism in Irish: frequently asked questions

What is the Irish for Catholicism?

The Irish for Catholicism is Caitliceachas (pronounced “KAT-lik-uh-khus”). It’s a masculine noun.

How do you pronounce Caitliceachas in Irish?

Caitliceachas is said like “KAT-lik-uh-khus” (IPA /ˈkatʲlʲɪcəxəsˠ/).

Does Caitliceachas have a plural?

No. Caitliceachas is a name, so it is used in the singular only.

Why does Caitliceachas change to Chaitliceachas or gCaitliceachas?

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

How do I say 'a Catholic' or 'Catholic' as an adjective?

A Catholic person is 'Caitliceach' and the adjective is also 'Caitliceach', as in 'an Eaglais Chaitliceach' (the Catholic Church).

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