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Useful in Irish (úsáideach): Meaning, Forms, Examples

The Irish for useful is úsáideach: leabhar úsáideach, a useful book.
Updated October 2026Report a mistake

How to say “useful” in Irish

Irish:
úsáideach
English:
useful
Word type:
adjective
More useful:
níos úsáidí
Most useful:
is úsáidí
Plural:
úsáideacha
Pronunciation:
“OO-saw-jakh”  /ˈuːsˠɑːdʲəx/

What does “úsáideach” mean?

useful
Having a practical use or being helpful for doing something.Also: handy, helpful, practical, of use.

Other Irish adjectives for useful: praiticiúil (practical), cabhrach (helpful), acrach (handy), fóinteach (useful)

“Úsáideach” after a noun

An Irish adjective comes after its noun. Here is úsáideach after leabhar (book, masculine), after uirlis (tool, feminine) and after a plural.

after a masculine nounleabhar úsáideacha useful book
after a feminine nounuirlis úsáideacha useful tool
after a plural nounleabhair úsáideachauseful books

séimhiú (the h) the ending

plural
leabhairbooks
+
úsáideachauseful, plural
=
leabhair úsáideachauseful books

With a plural noun the adjective takes its plural form, úsáideacha.

More useful, most useful, very useful

níosmore
+
úsáidíuseful
=
níos úsáidímore useful
ismost
+
úsáidíuseful
=
is úsáidímost useful

Tá an fón seo níos úsáidí ná an seancheann. This phone is more useful than the old one.

more usefulníos úsáidíin the past tense: ní b'úsáidí
most usefulis úsáidíin the past tense: ab úsáidí
as useful aschomh húsáideach lechomh puts an h before a vowel
very usefulan-úsáideachan- lenites, except d, t and s
too usefulró-úsáideachró- lenites

“Úsáideach” in a sentence: Irish examples

With a masculine noun, a feminine noun, a plural, a comparison and on its own.

Is leabhar úsáideach é seo do mhic léinn.
This is a useful book for students.
Cheannaigh mé uirlis úsáideach sa siopa.
I bought a useful tool in the shop.
Fuair mé roinnt leideanna úsáideacha uaithi.
I got some useful tips from her.
Tá an fón seo níos úsáidí ná an seancheann.
This phone is more useful than the old one.
Tá an foclóir sin an-úsáideach.
That dictionary is very useful.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Useful in Irish: frequently asked questions

What is the Irish for useful?

The Irish for useful is úsáideach (pronounced “OO-saw-jakh”). It comes after the noun: leabhar úsáideach, a useful book; uirlis úsáideach, a useful tool.

How do you say more useful and most useful in Irish?

níos úsáidí is more useful and is úsáidí is most useful. In the past tense they become ní b'úsáidí and ab úsáidí.

What is the plural of úsáideach?

With a plural noun úsáideach becomes úsáideacha: leabhair úsáideacha, uirlisí úsáideacha.

How do you say very useful in Irish?

an-úsáideach. Too useful is ró-úsáideach, and as useful as is chomh húsáideach le.

What is the difference between úsáideach and úsáidte?

Úsáideach means useful, while úsáidte is the verbal adjective meaning used, as in carr úsáidte, a used car.

Which preposition follows úsáideach?

Use do for the person or purpose it helps: Tá sé úsáideach do thurasóirí, it is useful for tourists.

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