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Capital city in Irish (Ardchathair): Meaning, Pronunciation, Usage

‘ardchathair’ also means: metropolis

The Irish for capital city is ardchathair, a feminine noun (plural ardchathracha).
Updated October 2026Report a mistake

How to say “capital city” in Irish

Irish:
ardchathair
English:
capital city, metropolis
Word type:
noun
Gender:
feminine, fifth declension
Pronunciation:
“AWRD-khah-hir”  /ˈaːɾˠd̪ˠˌxahəɾʲ/
Various forms
Plural:
ardchathracha (capital cities)
Genitive singular:
ardchathrach, na hardchathrach (e.g. lár na hardchathrach, the centre of the capital)
Genitive plural:
ardchathracha, na n-ardchathracha (e.g. daonra na n-ardchathracha, the population of the capital cities)

What does “ardchathair” mean?

“Ardchathair” has two alternative meanings. The most common comes first.

capital city
The city where the government of a country or region is based.Also: capital, seat of government.
1 other meaning: metropolis
2metropolis
A very large and important city.Also: major city.

Other Irish words for capital city: príomhchathair (capital city)

“Ardchathair” with the article

The plural of capital city in Irish is ardchathracha. Here is ardchathair after the article (an t-alt), in the singular and the plural.

an ardchathair
the capital city
No change: feminine nouns starting with a vowel keep their form after an
na hardchathracha
the capital cities
Plural: na adds h before a vowel

“Ardchathair” in a sentence: Irish examples

Common Irish sentences using ardchathair, the Irish word for capital city.

Is í Baile Átha Cliath ardchathair na hÉireann.
Dublin is the capital of Ireland.
Cad é ardchathair na Fraince?
What is the capital of France?
Tá an ardchathair an-ghnóthach inniu.
The capital is very busy today.
Tá cónaí orm i lár na hardchathrach.
I live in the centre of the capital.
Thugamar cuairt ar go leor ardchathracha san Eoraip.
We visited lots of capital cities in Europe.
Bhí an agóid ar siúl san ardchathair.
The protest took place in the capital.
D'fhoghlaim na páistí ardchathracha an domhain ar scoil.
The children learned the world's capitals at school.

Other nouns in Irish

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Capital city in Irish: frequently asked questions

What is the Irish for capital city?

The Irish for capital city is ardchathair (pronounced “AWRD-khah-hir”). It’s a feminine noun and the plural is ardchathracha. Depending on context it can also mean metropolis.

How do you pronounce ardchathair in Irish?

Ardchathair is said like “AWRD-khah-hir” (IPA /ˈaːɾˠd̪ˠˌxahəɾʲ/).

What is the plural of capital city in Irish?

The plural of ardchathair is ardchathracha; with the article, na hardchathracha means “the capital cities”. The genitive plural is ardchathracha, as in daonra na n-ardchathracha (the population of the capital cities).

Does ardchathair have more than one meaning?

Yes. Ardchathair can mean capital city or metropolis, depending on context; the first is the most common.

Why does ardchathair sometimes have a t or h in front of it?

Irish nouns beginning with a vowel take a prefix after certain words: an ardchathair (the capital city), a hardchathair (her capital city), a n-ardchathair (their capital city), na hardchathracha (the capital cities).

What is the difference between ardchathair and príomhchathair?

Both mean capital city; ardchathair is the usual word, while príomhchathair is also used, especially for a chief city of a region.

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