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Additive in Irish (suimitheach): Meaning, Forms, Examples

The Irish for additive is suimitheach: modh suimitheach, an additive method.
Updated October 2026Report a mistake

How to say “additive” in Irish

Irish:
suimitheach
English:
additive
Word type:
adjective
More additive:
níos suimithí
Most additive:
is suimithí
Plural:
suimitheacha
Pronunciation:
“SIM-i-hukh”  /ˈsˠɪmʲɪhəx/

What does “suimitheach” mean?

additive
Relating to addition or adding things together, as in maths or chemistry.Also: summative, cumulative, of addition.

“Suimitheach” after a noun

An Irish adjective comes after its noun. Here is suimitheach after modh (method, masculine), after scéim (scheme, feminine) and after a plural.

after a masculine nounmodh suimitheachan additive method
after a feminine nounscéim shuimitheachan additive scheme
after a plural nounmodhanna suimitheachaadditive methods

séimhiú (the h) the ending

feminine
scéimscheme
+
suimitheachadditive
=
scéim shuimitheachan additive scheme

After a feminine noun the adjective gets a séimhiú, an h after its first letter: scéim shuimitheach. After a masculine noun it stays as it is: modh suimitheach.

plural
modhannamethods
+
suimitheachaadditive, plural
=
modhanna suimitheachaadditive methods

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

More additive, most additive, very additive

níosmore
+
suimithíadditive
=
níos suimithímore additive
ismost
+
suimithíadditive
=
is suimithímost additive

Tá an dara modh níos suimithí ná an chéad cheann. The second method is more additive than the first.

more additiveníos suimithíin the past tense: ní ba shuimithí
most additiveis suimithíin the past tense: ba shuimithí
as additive aschomh suimitheach leno change after chomh
very additivean-suimitheachan- lenites, except d, t and s
too additiveróshuimitheachró- lenites

“Suimitheach” in a sentence: Irish examples

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

Is modh suimitheach é seo.
This is an additive method.
Tá airí shuimitheach ag an bhfeidhm seo.
This function has an additive property.
Mhínigh an múinteoir na modhanna suimitheacha.
The teacher explained the additive methods.
Tá an dara modh níos suimithí ná an chéad cheann.
The second method is more additive than the first.
Tá an éifeacht suimitheach.
The effect is additive.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Additive in Irish: frequently asked questions

What is the Irish for additive?

The Irish for additive is suimitheach (pronounced “SIM-i-hukh”). It comes after the noun: modh suimitheach, an additive method; scéim shuimitheach, an additive scheme.

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

níos suimithí is more additive and is suimithí is most additive. In the past tense they become ní ba shuimithí and ba shuimithí.

Why does suimitheach become shuimitheach?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So scéim shuimitheach (an additive scheme) but modh suimitheach (an additive method), because modh is masculine.

What is the plural of suimitheach?

With a plural noun suimitheach becomes suimitheacha: modhanna suimitheacha, scéimeanna suimitheacha.

How do you say very additive in Irish?

an-suimitheach. Too additive is róshuimitheach, and as additive as is chomh suimitheach le.

Is 'suimitheach' the same as 'suimiúil'?

No. 'Suimitheach' means additive, from 'suimiú' (adding), while 'suimiúil' means interesting.

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