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Duke in Irish (Diúc): Meaning, Pronunciation, Usage

The Irish for duke is diúc, a masculine noun (plural diúic).
Updated October 2026Report a mistake

How to say “duke” in Irish

Irish:
diúc
English:
duke
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“jook”  /dʲuːk/
Various forms
Plural:
diúic (dukes)
Genitive singular:
diúic, an diúic (e.g. caisleán an diúic, the duke's castle)
Genitive plural:
diúc, na ndiúc (e.g. teidil na ndiúc, the titles of the dukes)

What does “diúc” mean?

duke
A nobleman of the highest rank below a prince, or a ruler of a duchy.Also: nobleman, peer.

“Diúc” with the article

The plural of duke in Irish is diúic. Here is diúc after the article (an t-alt), in the singular and the plural.

an diúc
the duke
No change after an
na diúic
the dukes
Plural: no change after na

“Diúc” in a sentence: Irish examples

Common Irish sentences using diúc, the Irish word for duke.

Bhí diúc ina chónaí sa chaisleán sin fadó.
A duke lived in that castle long ago.
Tháinig an diúc ar cuairt chuig an mbaile.
The duke came to visit the town.
Ba le muintir an diúic an talamh go léir.
All the land belonged to the duke's family.
Bhí beirt diúc i láthair ag an bpósadh ríoga.
Two dukes were present at the royal wedding.
Rinneadh diúc de tar éis an chogaidh.
He was made a duke after the war.
Ní raibh na diúic sásta leis an rí.
The dukes were not happy with the king.
Phós sí mac an diúic.
She married the duke's son.

Other nouns in Irish

More everyday Irish nouns to learn next.

Duke in Irish: frequently asked questions

What is the Irish for duke?

The Irish for duke is diúc (pronounced “jook”). It’s a masculine noun and the plural is diúic.

How do you pronounce diúc in Irish?

Diúc is said like “jook” (IPA /dʲuːk/).

What is the plural of duke in Irish?

The plural of diúc is diúic; with the article, na diúic means “the dukes”. The genitive plural is diúc, as in teidil na ndiúc (the titles of the dukes).

Why does diúc change to dhiúc or ndiúc?

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

What is the Irish for duchess?

A duchess is 'bandiúc', and the duke's territory, a duchy, is 'diúcacht' or 'diúcnacht'.

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