HeyRua Get the app

Complementary in Irish (comhlántach): Meaning, Forms, Examples

Other uses of ‘comhlántach’: complementary (maths)

The Irish for complementary is comhlántach: dath comhlántach, a complementary colour.
Updated October 2026Report a mistake

How to say “complementary” in Irish

Irish:
comhlántach
English:
complementary, complementary (maths)
Word type:
adjective
More complementary:
níos comhlántaí
Most complementary:
is comhlántaí
Plural:
comhlántacha
Pronunciation:
“KOH-lawn-tukh”  /ˈkoːlˠɑːn̪ˠt̪ˠəx/

What does “comhlántach” mean?

“Comhlántach” has two alternative meanings. The most common comes first.

complementary
Describes things that complete or go well with each other by supplying what the other lacks.Also: complemental, completing, supplementary.
1 other meaning: complementary (maths)
2complementary (maths)
In geometry, describes two angles that together make a right angle.Also: complementary, complementary angle.

“Comhlántach” after a noun

An Irish adjective comes after its noun. Here is comhlántach after dath (colour, masculine), after uillinn (angle, feminine) and after a plural.

after a masculine noundath comhlántacha complementary colour
after a feminine nounuillinn chomhlántacha complementary angle
after a plural noundathanna comhlántachacomplementary colours

séimhiú (the h) the ending

feminine
uillinnangle
+
comhlántachcomplementary
=
uillinn chomhlántacha complementary angle

After a feminine noun the adjective gets a séimhiú, an h after its first letter: uillinn chomhlántach. After a masculine noun it stays as it is: dath comhlántach.

plural
dathannacolours
+
comhlántachacomplementary, plural
=
dathanna comhlántachacomplementary colours

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

More complementary, most complementary, very complementary

níosmore
+
comhlántaícomplementary
=
níos comhlántaímore complementary
ismost
+
comhlántaícomplementary
=
is comhlántaímost complementary

Tá an dá phlean seo níos comhlántaí ná riamh. These two plans are more complementary than ever.

more complementaryníos comhlántaíin the past tense: ní ba chomhlántaí
most complementaryis comhlántaíin the past tense: ba chomhlántaí
as complementary aschomh comhlántach leno change after chomh
very complementaryan-chomhlántachan- lenites, except d, t and s
too complementaryróchomhlántachró- lenites

“Comhlántach” in a sentence: Irish examples

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

Is cur chuige comhlántach é seo.
This is a complementary approach.
Tá uillinn chomhlántach ag an triantán seo.
This triangle has a complementary angle.
Tá scileanna comhlántacha ag an mbeirt acu.
The two of them have complementary skills.
Tá an dá phlean seo níos comhlántaí ná riamh.
These two plans are more complementary than ever.
Tá a gcuid tallann comhlántach.
Their talents are complementary.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Complementary in Irish: frequently asked questions

What is the Irish for complementary?

The Irish for complementary is comhlántach (pronounced “KOH-lawn-tukh”). It comes after the noun: dath comhlántach, a complementary colour; uillinn chomhlántach, a complementary angle.

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

níos comhlántaí is more complementary and is comhlántaí is most complementary. In the past tense they become ní ba chomhlántaí and ba chomhlántaí.

Why does comhlántach become chomhlántach?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So uillinn chomhlántach (a complementary angle) but dath comhlántach (a complementary colour), because dath is masculine.

What is the plural of comhlántach?

With a plural noun comhlántach becomes comhlántacha: dathanna comhlántacha, uillinneacha comhlántacha.

How do you say very complementary in Irish?

an-chomhlántach. Too complementary is róchomhlántach, and as complementary as is chomh comhlántach le.

Does comhlántach have more than one meaning?

Yes. Comhlántach can mean complementary or complementary (maths), depending on context; the first is the most common.

What is the difference between comhlántach and forlíontach?

Comhlántach means complementary, completing each other, while forlíontach means supplementary, adding something extra.

Learn Irish by
actually speaking it

Learn everyday Irish words like comhlántach through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen