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Adder in Irish (Suimitheoir): Meaning, Pronunciation, Usage

The Irish for adder is suimitheoir, a masculine noun (plural suimitheoirí).
Updated October 2026Report a mistake

How to say “adder” in Irish

Irish:
suimitheoir
English:
adder
Word type:
noun
Gender:
masculine
Pronunciation:
“SIM-ih-hoar”  /ˈsˠɪmʲɪhoːɾʲ/
Various forms
Plural:
suimitheoirí (adders)
Genitive singular:
suimitheora, an tsuimitheora (e.g. cnaipí an tsuimitheora, the buttons of the adding machine)
Genitive plural:
suimitheoirí, na suimitheoirí (e.g. cnaipí na suimitheoirí, the buttons of the adding machines)

What does “suimitheoir” mean?

adder
A machine or device that adds numbers together, such as an adding machine or an adder circuit in a computer.Also: adding machine, summator.

“Suimitheoir” with the article

The plural of adder in Irish is suimitheoirí. Here is suimitheoir after the article (an t-alt), in the singular and the plural.

an suimitheoir
the adder
No change after an
na suimitheoirí
the adders
Plural: no change after na

“Suimitheoir” in a sentence: Irish examples

Common Irish sentences using suimitheoir, the Irish word for adder.

Is gléas simplí é suimitheoir.
An adder is a simple device.
Bhí an suimitheoir ar an deasc san oifig.
The adding machine was on the desk in the office.
Tá ciorcad an tsuimitheora briste.
The adder circuit is broken.
Úsáidtear suimitheoirí i ngach ríomhaire.
Adders are used in every computer.
Cheannaigh m'athair suimitheoir fadó.
My father bought an adding machine long ago.
Tá earráid i mo shuimitheoir.
There is an error in my adder.
Foghlaimímid faoi shuimitheoirí sa rang leictreonaice.
We learn about adders in the electronics class.

Other nouns in Irish

More everyday Irish nouns to learn next.

Adder in Irish: frequently asked questions

What is the Irish for adder?

The Irish for adder is suimitheoir (pronounced “SIM-ih-hoar”). It’s a masculine noun and the plural is suimitheoirí.

How do you pronounce suimitheoir in Irish?

Suimitheoir is said like “SIM-ih-hoar” (IPA /ˈsˠɪmʲɪhoːɾʲ/).

What is the plural of adder in Irish?

The plural of suimitheoir is suimitheoirí; with the article, na suimitheoirí means “the adders”. The genitive plural is suimitheoirí, as in cnaipí na suimitheoirí (the buttons of the adding machines).

Why does suimitheoir change to shuimitheoir?

After words like mo (my) and do (your) the first letter is lenited: mo shuimitheoir. After ár (our) it stays ár suimitheoir, because s does not take eclipsis.

Is a suimitheoir the same as an áireamhán?

Not quite: an áireamhán is a general calculator, while a suimitheoir is specifically an adding device or adder circuit.

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