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Fortress in Irish (Dúnfort): Meaning, Pronunciation, Usage

The Irish for fortress is dúnfort, a masculine noun (plural dúnfoirt).
Updated October 2026Report a mistake

How to say “fortress” in Irish

Irish:
dúnfort
English:
fortress
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“DOON-furt”  /ˈd̪ˠuːnˠfˠɔɾˠt̪ˠ/
Various forms
Plural:
dúnfoirt (fortresses)
Genitive singular:
dúnfoirt, an dúnfoirt (e.g. ballaí an dúnfoirt, the walls of the fortress)
Genitive plural:
dúnfort, na ndúnfort (e.g. ag tógáil dúnfort, building fortresses)

What does “dúnfort” mean?

fortress
A large strongly fortified building or place built to defend against attack.Also: stronghold, citadel, fort.

Other Irish words for fortress: dún (fort), caisleán (castle), caistéal (castle)

“Dúnfort” with the article

The plural of fortress in Irish is dúnfoirt. Here is dúnfort after the article (an t-alt), in the singular and the plural.

an dúnfort
the fortress
No change after an
na dúnfoirt
the fortresses
Plural: no change after na

“Dúnfort” in a sentence: Irish examples

Common Irish sentences using dúnfort, the Irish word for fortress.

Tógadh an dúnfort ar bharr an chnoic.
The fortress was built on top of the hill.
Bhí dúnfort láidir ag an rí anseo.
The king had a strong fortress here.
Thug siad ionsaí ar an dúnfort san oíche.
They attacked the fortress at night.
Tá geata an dúnfoirt fós ina sheasamh.
The gate of the fortress is still standing.
Bhí na saighdiúirí slán sa dúnfort.
The soldiers were safe in the fortress.
Tógadh dúnfoirt feadh an chósta.
Fortresses were built along the coast.
Tháinig an t-arm i ndúnfort an namhad.
The army came into the enemy's fortress.

Other nouns in Irish

More everyday Irish nouns to learn next.

Fortress in Irish: frequently asked questions

What is the Irish for fortress?

The Irish for fortress is dúnfort (pronounced “DOON-furt”). It’s a masculine noun and the plural is dúnfoirt.

How do you pronounce dúnfort in Irish?

Dúnfort is said like “DOON-furt” (IPA /ˈd̪ˠuːnˠfˠɔɾˠt̪ˠ/).

What is the plural of fortress in Irish?

The plural of dúnfort is dúnfoirt; with the article, na dúnfoirt means “the fortresses”. The genitive plural is dúnfort, as in ag tógáil dúnfort (building fortresses).

Why does dúnfort change to dhúnfort or ndúnfort?

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

How is 'dúnfort' different from 'dún' and 'caisleán'?

'Dún' is a general word for a fort, often an ancient ring fort, while 'dúnfort' stresses a large fortified stronghold. 'Caisleán' is a castle.

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