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Ninth in Irish (Naoú): Meaning, Pronunciation, Usage

The Irish for ninth is naoú, a masculine noun (plural naoithe).
Updated October 2026Report a mistake

How to say “ninth” in Irish

Irish:
naoú
English:
ninth
Word type:
noun
Gender:
masculine
Pronunciation:
“NEE-oo”  /ˈn̪ˠiːuː/
Various forms
Plural:
naoithe (ninths)
Genitive singular:
naoú, an naoú (e.g. luach an naoú, the value of the ninth)
Genitive plural:
naoithe, na naoithe (e.g. suim na naoithe, the sum of the ninths)

What does “naoú” mean?

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

ninth
One of nine equal parts of something; a ninth part.Also: ninth part, one ninth.
1 other meaning:
2ninth
The person or thing that comes ninth in a series or order.Also: ninth one, ninth place.

“Naoú” with the article

The plural of ninth in Irish is naoithe. Here is naoú after the article (an t-alt), in the singular and the plural.

an naoú
the ninth
No change after an
na naoithe
the ninths
Plural: no change after na

“Naoú” in a sentence: Irish examples

Common Irish sentences using naoú, the Irish word for ninth.

Is ionann naoú agus a haon roinnte ar a naoi.
A ninth equals one divided by nine.
Fuair sé naoú den airgead.
He got a ninth of the money.
Tá dhá naoú den chíste fágtha.
Two ninths of the cake are left.
Cuir na naoithe seo le chéile.
Add these ninths together.
Bhí sí sa naoú háit sa rás.
She was ninth in the race.
Scríobh ceithre naoú mar chodán.
Write four ninths as a fraction.
Is é an naoú lá de Mhárta inniu.
Today is the ninth of March.

Other nouns in Irish

More everyday Irish nouns to learn next.

Ninth in Irish: frequently asked questions

What is the Irish for ninth?

The Irish for ninth is naoú (pronounced “NEE-oo”). It’s a masculine noun and the plural is naoithe.

How do you pronounce naoú in Irish?

Naoú is said like “NEE-oo” (IPA /ˈn̪ˠiːuː/).

What is the plural of ninth in Irish?

The plural of naoú is naoithe; with the article, na naoithe means “the ninths”. The genitive plural is naoithe, as in suim na naoithe (the sum of the ninths).

How do I say 'the ninth day' in Irish?

Use naoú before the noun with no lenition: an naoú lá. Before a vowel it prefixes h: an naoú huair, 'the ninth time'.

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