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Fiftieth in Irish (Caogadú): Meaning, Pronunciation, Usage

The Irish for fiftieth is caogadú, a masculine noun (plural caogaduithe).
Updated October 2026Report a mistake

How to say “fiftieth” in Irish

Irish:
caogadú
English:
fiftieth
Word type:
noun
Gender:
masculine, fourth declension
Pronunciation:
“KWEE-guh-doo”  /ˈkiːɡəd̪ˠuː/
Various forms
Plural:
caogaduithe (fiftieths)
Genitive singular:
caogadú, an chaogadú (e.g. ceiliúradh an chaogadú, celebration of the fiftieth)
Genitive plural:
caogaduithe, na gcaogaduithe (e.g. suim na gcaogaduithe, the sum of the fiftieths)

What does “caogadú” mean?

fiftieth
The fiftieth one in a series, or one fiftieth part of something.Also: one fiftieth, fiftieth part.

“Caogadú” with the article

The plural of fiftieth in Irish is caogaduithe. Here is caogadú after the article (an t-alt), in the singular and the plural.

an caogadú
the fiftieth
No change after an
na caogaduithe
the fiftieths
Plural: no change after na

“Caogadú” in a sentence: Irish examples

Common Irish sentences using caogadú, the Irish word for fiftieth.

Is é seo an caogadú uair a dúirt mé leat.
This is the fiftieth time I've told you.
Bhí caogadú den airgead ag gach duine.
Each person had a fiftieth of the money.
Cheiliúir siad an caogadú breithlá aici inné.
They celebrated her fiftieth birthday yesterday.
Tá caogadú cuid de seo i ngach bosca.
There is a fiftieth part of this in each box.
Cuir na caogaduithe sin le chéile.
Add those fiftieths together.
Ba é an caogadú duine é sa scuaine.
He was the fiftieth person in the queue.
Is ionann dhá chaogadú agus aon chúigiú is fiche.
Two fiftieths equal one twenty-fifth.

Other nouns in Irish

More everyday Irish nouns to learn next.

Fiftieth in Irish: frequently asked questions

What is the Irish for fiftieth?

The Irish for fiftieth is caogadú (pronounced “KWEE-guh-doo”). It’s a masculine noun and the plural is caogaduithe.

How do you pronounce caogadú in Irish?

Caogadú is said like “KWEE-guh-doo” (IPA /ˈkiːɡəd̪ˠuː/).

What is the plural of fiftieth in Irish?

The plural of caogadú is caogaduithe; with the article, na caogaduithe means “the fiftieths”. The genitive plural is caogaduithe, as in suim na gcaogaduithe (the sum of the fiftieths).

Why does caogadú change to chaogadú or gcaogadú?

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

Is caogadú a noun or an adjective?

It works as an ordinal, as in an caogadú lá 'the fiftieth day', and as a noun for a fraction, as in caogadú 'a fiftieth part'.

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