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Momentous in Irish (trombhríoch): Meaning, Forms, Examples

The Irish for momentous is trombhríoch: cruinniú trombhríoch, a momentous meeting.
Updated October 2026Report a mistake

How to say “momentous” in Irish

Irish:
trombhríoch
English:
momentous
Word type:
adjective
More momentous:
níos trombhríche
Most momentous:
is trombhríche
Plural:
trombhríocha
Pronunciation:
“TROM-vree-ukh”  /ˈt̪ˠɾˠɔmˠvʲɾʲiːəx/

What does “trombhríoch” mean?

momentous
Very important and serious, with great consequences or weight.Also: weighty, important, grave, significant.

“Trombhríoch” after a noun

An Irish adjective comes after its noun. Here is trombhríoch after cruinniú (meeting, masculine), after céim (step, feminine) and after a plural.

after a masculine nouncruinniú trombhríocha momentous meeting
after a feminine nouncéim thrombhríocha momentous step
after a plural nouncruinnithe trombhríochamomentous meetings

séimhiú (the h) the ending

feminine
céimstep
+
trombhríochmomentous
=
céim thrombhríocha momentous step

After a feminine noun the adjective gets a séimhiú, an h after its first letter: céim thrombhríoch. After a masculine noun it stays as it is: cruinniú trombhríoch.

plural
cruinnithemeetings
+
trombhríochamomentous, plural
=
cruinnithe trombhríochamomentous meetings

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

More momentous, most momentous, very momentous

níosmore
+
trombhríchemomentous
=
níos trombhríchemore momentous
ismost
+
trombhríchemomentous
=
is trombhríchemost momentous

Bhí an dara cruinniú níos trombhríche ná an chéad cheann. The second meeting was more momentous than the first.

more momentousníos trombhríchein the past tense: ní ba thrombhríche
most momentousis trombhríchein the past tense: ba thrombhríche
as momentous aschomh trombhríoch leno change after chomh
very momentousan-trombhríochan- lenites, except d, t and s
too momentousróthrombhríochró- lenites

“Trombhríoch” in a sentence: Irish examples

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

Rinne an rialtas cinneadh trombhríoch inné.
The government made a momentous decision yesterday.
Is ceist thrombhríoch í seo dúinn go léir.
This is a weighty question for all of us.
Tharla imeachtaí trombhríocha sa tír an bhliain sin.
Momentous events happened in the country that year.
Bhí an dara cruinniú níos trombhríche ná an chéad cheann.
The second meeting was more momentous than the first.
Tá an scéal seo trombhríoch.
This matter is serious.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Momentous in Irish: frequently asked questions

What is the Irish for momentous?

The Irish for momentous is trombhríoch (pronounced “TROM-vree-ukh”). It comes after the noun: cruinniú trombhríoch, a momentous meeting; céim thrombhríoch, a momentous step.

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

níos trombhríche is more momentous and is trombhríche is most momentous. In the past tense they become ní ba thrombhríche and ba thrombhríche.

Why does trombhríoch become thrombhríoch?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So céim thrombhríoch (a momentous step) but cruinniú trombhríoch (a momentous meeting), because cruinniú is masculine.

What is the plural of trombhríoch?

With a plural noun trombhríoch becomes trombhríocha: cruinnithe trombhríocha, céimeanna trombhríocha.

How do you say very momentous in Irish?

an-trombhríoch. Too momentous is róthrombhríoch, and as momentous as is chomh trombhríoch le.

How is 'trombhríoch' different from 'tábhachtach'?

'Tábhachtach' is the everyday word for important, while 'trombhríoch' is more formal and stresses weight and serious consequences, like 'momentous'. It is built from 'trom' (heavy) and 'brí' (meaning, force).

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