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Under-age in Irish (mionaoiseach): Meaning, Forms, Examples

The Irish for under-age is mionaoiseach: duine mionaoiseach, an under-age person.
Updated October 2026Report a mistake

How to say “under-age” in Irish

Irish:
mionaoiseach
English:
under-age
Word type:
adjective
More under-age:
níos mionaoisí
Most under-age:
is mionaoisí
Plural:
mionaoiseacha
Pronunciation:
“MIN-ee-shuk”  /ˈmʲɪnˠiːʃəx/

What does “mionaoiseach” mean?

under-age
Describes a person who has not yet reached the legal age of an adult.Also: underage, minor, juvenile.

“Mionaoiseach” after a noun

An Irish adjective comes after its noun. Here is mionaoiseach after duine (person, masculine), after iníon (daughter, feminine) and after a plural.

after a masculine nounduine mionaoiseachan under-age person
after a feminine nouniníon mhionaoiseachan under-age daughter
after a plural noundaoine mionaoiseachaunder-age people

séimhiú (the h) the ending

feminine
iníondaughter
+
mionaoiseachunder-age
=
iníon mhionaoiseachan under-age daughter

After a feminine noun the adjective gets a séimhiú, an h after its first letter: iníon mhionaoiseach. After a masculine noun it stays as it is: duine mionaoiseach.

plural
daoinepeople
+
mionaoiseachaunder-age, plural
=
daoine mionaoiseachaunder-age people

With a plural noun the adjective takes its plural form, mionaoiseacha. It also gets an h after a plural that ends in a slender consonant; after other plurals it does not: iníonacha mionaoiseacha.

More under-age, most under-age, very under-age

níosmore
+
mionaoisíunder-age
=
níos mionaoisímore under-age
ismost
+
mionaoisíunder-age
=
is mionaoisímost under-age

Bhí sé níos mionaoisí ná a chairde. He was further under age than his friends.

more under-ageníos mionaoisíin the past tense: ní ba mhionaoisí
most under-ageis mionaoisíin the past tense: ba mhionaoisí
as under-age aschomh mionaoiseach leno change after chomh
very under-agean-mhionaoiseachan- lenites, except d, t and s
too under-agerómhionaoiseachró- lenites

“Mionaoiseach” in a sentence: Irish examples

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

Ní féidir alcól a dhíol le duine mionaoiseach.
Alcohol cannot be sold to an underage person.
Bhí cailín mionaoiseach sa chlub oíche.
There was an underage girl in the nightclub.
Ní ligtear daoine mionaoiseacha isteach sa teach tábhairne.
Underage people are not let into the pub.
Bhí sé níos mionaoisí ná a chairde.
He was further under age than his friends.
Tá an buachaill sin mionaoiseach fós.
That boy is still under age.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Under-age in Irish: frequently asked questions

What is the Irish for under-age?

The Irish for under-age is mionaoiseach (pronounced “MIN-ee-shuk”). It comes after the noun: duine mionaoiseach, an under-age person; iníon mhionaoiseach, an under-age daughter.

How do you say more under-age and most under-age in Irish?

níos mionaoisí is more under-age and is mionaoisí is most under-age. In the past tense they become ní ba mhionaoisí and ba mhionaoisí.

Why does mionaoiseach become mhionaoiseach?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So iníon mhionaoiseach (an under-age daughter) but duine mionaoiseach (an under-age person), because duine is masculine.

What is the plural of mionaoiseach?

With a plural noun mionaoiseach becomes mionaoiseacha: daoine mionaoiseacha, iníonacha mionaoiseacha.

How do you say very under-age in Irish?

an-mhionaoiseach. Too under-age is rómhionaoiseach, and as under-age as is chomh mionaoiseach le.

What is the noun for a minor in Irish?

A minor is 'mionaoiseach' used as a noun, and the state of being under age is 'mionaois'.

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