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Complex in Irish (coimpléascach): Meaning, Forms, Examples

The Irish for complex is coimpléascach: córas coimpléascach, a complex system.
Updated October 2026Report a mistake

How to say “complex” in Irish

Irish:
coimpléascach
English:
complex
Word type:
adjective
More complex:
níos coimpléascaí
Most complex:
is coimpléascaí
Plural:
coimpléascacha
Pronunciation:
“KIM-plays-kukh”  /ˈkɪmʲpʲlʲeːsˠkəx/

What does “coimpléascach” mean?

complex
Made up of many connected parts, and so hard to understand or deal with.Also: complicated, intricate, involved.

Other Irish adjectives for complex: casta (complicated)

“Coimpléascach” after a noun

An Irish adjective comes after its noun. Here is coimpléascach after córas (system, masculine), after ceist (question, feminine) and after a plural.

after a masculine nouncóras coimpléascacha complex system
after a feminine nounceist choimpléascacha complex question
after a plural nouncórais choimpléascachacomplex systems

séimhiú (the h) the ending

feminine
ceistquestion
+
coimpléascachcomplex
=
ceist choimpléascacha complex question

After a feminine noun the adjective gets a séimhiú, an h after its first letter: ceist choimpléascach. After a masculine noun it stays as it is: córas coimpléascach.

plural
córaissystems
+
coimpléascachacomplex, plural
=
córais choimpléascachacomplex systems

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

More complex, most complex, very complex

níosmore
+
coimpléascaícomplex
=
níos coimpléascaímore complex
ismost
+
coimpléascaícomplex
=
is coimpléascaímost complex

Tá an fhadhb seo níos coimpléascaí ná an ceann eile. This problem is more complex than the other one.

more complexníos coimpléascaíin the past tense: ní ba choimpléascaí
most complexis coimpléascaíin the past tense: ba choimpléascaí
as complex aschomh coimpléascach leno change after chomh
very complexan-choimpléascachan- lenites, except d, t and s
too complexróchoimpléascachró- lenites

“Coimpléascach” in a sentence: Irish examples

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

Is córas coimpléascach é sin.
That is a complex system.
Chuir sí ceist choimpléascach orm.
She asked me a complex question.
Bíonn na rialacha coimpléascacha go minic.
The rules are often complex.
Tá an fhadhb seo níos coimpléascaí ná an ceann eile.
This problem is more complex than the other one.
Tá an scéal an-choimpléascach.
The situation is very complex.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Complex in Irish: frequently asked questions

What is the Irish for complex?

The Irish for complex is coimpléascach (pronounced “KIM-plays-kukh”). It comes after the noun: córas coimpléascach, a complex system; ceist choimpléascach, a complex question.

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

níos coimpléascaí is more complex and is coimpléascaí is most complex. In the past tense they become ní ba choimpléascaí and ba choimpléascaí.

Why does coimpléascach become choimpléascach?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So ceist choimpléascach (a complex question) but córas coimpléascach (a complex system), because córas is masculine.

What is the plural of coimpléascach?

With a plural noun coimpléascach becomes coimpléascacha: córais choimpléascacha, ceisteanna coimpléascacha. After a plural that ends in a slender consonant it is lenited as well.

How do you say very complex in Irish?

an-choimpléascach. Too complex is róchoimpléascach, and as complex as is chomh coimpléascach le.

What is the difference between 'coimpléascach' and 'casta'?

'Casta' is the more everyday word for complicated, while 'coimpléascach' is more formal and often used in technical or scientific contexts, as in 'uimhir choimpléascach' (a complex number).

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