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Three in Irish (Trí): Meaning, Pronunciation, Usage

‘trí’ also means: through

The Irish for three is trí, a masculine noun (plural tríonna).
Updated October 2026Report a mistake

How to say “three” in Irish

Irish:
trí
English:
three
Word type:
noun
Gender:
masculine, fourth declension
Pronunciation:
“tree”  /tʲɾʲiː/
Various forms
Plural:
tríonna (threes)
Genitive singular:
trí, an trí (e.g. luach an trí, the value of three)
Genitive plural:
tríonna, na dtríonna (e.g. suim na dtríonna, the sum of the threes)

What does “trí” mean?

three
The number three, used as a noun, for example the figure 3 or a card or score of three.Also: number three, figure three, trey.
Other entries for “trí”

The same spelling has its own page as:

Other Irish words for three: triúr (three people)

“Trí” with the article

The plural of three in Irish is tríonna. Here is trí after the article (an t-alt), in the singular and the plural.

an trí
the three
No change after an
na tríonna
the threes
Plural: no change after na

“Trí” in a sentence: Irish examples

Common Irish sentences using trí, the Irish word for three.

Tá sé a trí a chlog.
It is three o'clock.
Cé mhéad is ea a dó móide a trí?
What is two plus three?
An leor trí lá?
Are three days enough?
Scríobh an trí ar an gclár dubh.
Write the three on the blackboard.
Bhí trí chéad euro sa mhí air.
It was three hundred euro a month.
Fuair mé dhá thrí sna cártaí.
I got two threes in the cards.
Tá trí bliana agat orm.
You are three years older than me.

Other nouns in Irish

More everyday Irish nouns to learn next.

Three in Irish: frequently asked questions

What is the Irish for three?

The Irish for three is trí (pronounced “tree”). It’s a masculine noun and the plural is tríonna.

How do you pronounce trí in Irish?

Trí is said like “tree” (IPA /tʲɾʲiː/).

What is the plural of three in Irish?

The plural of trí is tríonna; with the article, na tríonna means “the threes”. The genitive plural is tríonna, as in suim na dtríonna (the sum of the threes).

Does trí have more than one meaning?

Trí also has its own entry as a preposition meaning through.

Why does trí change to thrí or dtrí?

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

When do I use 'a trí' and when 'trí'?

Use 'a trí' when counting or giving a number on its own (a haon, a dó, a trí), and 'trí' before a noun, which it lenites: trí bhó.

How do I say three people?

For people use the personal number 'triúr': triúr ban, three women.

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