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Celtic in Irish (Ceiltis): Meaning, Pronunciation, Usage

The Irish for Celtic is Ceiltis, a feminine noun.
Updated October 2026Report a mistake

How to say “Celtic” in Irish

Irish:
Ceiltis
English:
Celtic
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“KEL-tish”  /ˈcɛl̠ʲtʲɪʃ/
Various forms
Genitive singular:
Ceiltise, na Ceiltise (e.g. staidéar na Ceiltise, the study of Celtic)

What does “Ceiltis” mean?

Celtic
The Celtic languages as a group, or the reconstructed ancestral Celtic language from which Irish, Welsh and the others descend.Also: Celtic language, Celtic languages, proto-Celtic.

“Ceiltis” with the article

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

an Cheiltis
the Celtic
Lenition: C becomes Ch after an (feminine noun)

“Ceiltis” in a sentence: Irish examples

Common Irish sentences using Ceiltis, the Irish word for Celtic.

Is teanga Cheilteach í an Ghaeilge, ní Ceiltis amháin.
Irish is a Celtic language, not just Celtic itself.
Tá sí ag déanamh staidéir ar an gCeiltis.
She is studying Celtic.
Is ollamh le Ceiltis é sa choláiste.
He is a professor of Celtic at the college.
Tháinig an focal seo ón gCeiltis.
This word came from Celtic.
Tá roinn Cheiltise san ollscoil sin.
That university has a Celtic department.
Bhí an Cheiltis á labhairt ar fud na hEorpa.
Celtic was spoken throughout Europe.
Léigh mé leabhar faoi stair na Ceiltise.
I read a book about the history of Celtic.

Other nouns in Irish

More everyday Irish nouns to learn next.

Celtic in Irish: frequently asked questions

What is the Irish for Celtic?

The Irish for Celtic is Ceiltis (pronounced “KEL-tish”). It’s a feminine noun.

How do you pronounce Ceiltis in Irish?

Ceiltis is said like “KEL-tish” (IPA /ˈcɛl̠ʲtʲɪʃ/).

Does Ceiltis have a plural?

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

Why does Ceiltis change to Cheiltis or gCeiltis?

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

How do I say 'Celtic' as an adjective, e.g. Celtic music?

Use the adjective Ceilteach: ceol Ceilteach. Ceiltis is only the noun for the language.

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