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Wasteful in Irish (diomailteach): Meaning, Forms, Examples

The Irish for wasteful is diomailteach: duine diomailteach, a wasteful person.
Updated October 2026Report a mistake

How to say “wasteful” in Irish

Irish:
diomailteach
English:
wasteful
Word type:
adjective
More wasteful:
níos diomailtí
Most wasteful:
is diomailtí
Plural:
diomailteacha
Pronunciation:
“DUM-al-tchuch”  /ˈdʲʊmˠəlʲtʲəx/

What does “diomailteach” mean?

wasteful
Using money, time or resources carelessly so that they are wasted.Also: extravagant, prodigal, spendthrift, squandering.

“Diomailteach” after a noun

An Irish adjective comes after its noun. Here is diomailteach after duine (person, masculine), after girseach (girl, feminine) and after a plural.

after a masculine nounduine diomailteacha wasteful person
after a feminine noungirseach dhiomailteacha wasteful girl
after a plural noundaoine diomailteachawasteful people

séimhiú (the h) the ending

feminine
girseachgirl
+
diomailteachwasteful
=
girseach dhiomailteacha wasteful girl

After a feminine noun the adjective gets a séimhiú, an h after its first letter: girseach dhiomailteach. After a masculine noun it stays as it is: duine diomailteach.

plural
daoinepeople
+
diomailteachawasteful, plural
=
daoine diomailteachawasteful people

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

More wasteful, most wasteful, very wasteful

níosmore
+
diomailtíwasteful
=
níos diomailtímore wasteful
ismost
+
diomailtíwasteful
=
is diomailtímost wasteful

Tá sé níos diomailtí ná a dheartháir. He is more wasteful than his brother.

more wastefulníos diomailtíin the past tense: ní ba dhiomailtí
most wastefulis diomailtíin the past tense: ba dhiomailtí
as wasteful aschomh diomailteach leno change after chomh
very wastefulan-diomailteachan- lenites, except d, t and s
too wastefulródhiomailteachró- lenites

“Diomailteach” in a sentence: Irish examples

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

Is duine diomailteach é le hairgead.
He is a wasteful person with money.
Bhí bean dhiomailteach ina cónaí sa teach sin.
A wasteful woman lived in that house.
Ní maith liom nósanna diomailteacha.
I don't like wasteful habits.
Tá sé níos diomailtí ná a dheartháir.
He is more wasteful than his brother.
Tá an córas seo an-diomailteach.
This system is very wasteful.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Wasteful in Irish: frequently asked questions

What is the Irish for wasteful?

The Irish for wasteful is diomailteach (pronounced “DUM-al-tchuch”). It comes after the noun: duine diomailteach, a wasteful person; girseach dhiomailteach, a wasteful girl.

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

níos diomailtí is more wasteful and is diomailtí is most wasteful. In the past tense they become ní ba dhiomailtí and ba dhiomailtí.

Why does diomailteach become dhiomailteach?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So girseach dhiomailteach (a wasteful girl) but duine diomailteach (a wasteful person), because duine is masculine.

What is the plural of diomailteach?

With a plural noun diomailteach becomes diomailteacha: daoine diomailteacha, girseacha diomailteacha.

How do you say very wasteful in Irish?

an-diomailteach. Too wasteful is ródhiomailteach, and as wasteful as is chomh diomailteach le.

What is the opposite of 'diomailteach'?

The usual opposites are 'tíosach' or 'coigilteach', meaning thrifty or economical.

What noun is 'diomailteach' related to?

It comes from 'diomailt', meaning waste or squandering, as in 'diomailt ama' (a waste of time).

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