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Axiom in Irish (Soiléirse): Meaning, Pronunciation, Usage

The Irish for axiom is soiléirse, a feminine noun (plural soiléirsí).
Updated October 2026Report a mistake

How to say “axiom” in Irish

Irish:
soiléirse
English:
axiom
Word type:
noun
Gender:
feminine, fourth declension
Pronunciation:
“SIL-ayr-shuh”  /ˈsʲɪlʲeːɾʲʃə/
Various forms
Plural:
soiléirsí (axioms)
Genitive singular:
soiléirse, na soiléirse (e.g. fírinne na soiléirse, the truth of the axiom)
Genitive plural:
soiléirsí, na soiléirsí (e.g. fírinne na soiléirsí, the truth of the axioms)

What does “soiléirse” mean?

axiom
A statement accepted as true without proof, used as a starting point in reasoning, especially in mathematics and logic.Also: self-evident truth, postulate, truism.

“Soiléirse” with the article

The plural of axiom in Irish is soiléirsí. Here is soiléirse after the article (an t-alt), in the singular and the plural.

an tsoiléirse
the axiom
Feminine nouns take t before s after an
na soiléirsí
the axioms
Plural: no change after na

“Soiléirse” in a sentence: Irish examples

Common Irish sentences using soiléirse, the Irish word for axiom.

Is soiléirse í sin sa gheoiméadracht.
That is an axiom in geometry.
Ní gá an tsoiléirse a chruthú.
The axiom does not need to be proved.
Thosaigh an múinteoir le soiléirsí Eoiclid.
The teacher started with Euclid's axioms.
Glacaimid leis an tsoiléirse gan cheist.
We accept the axiom without question.
Tá brí na soiléirse sin an-simplí.
The meaning of that axiom is very simple.
Tá cúig shoiléirse sa chóras seo.
There are five axioms in this system.
Bunaítear an teoiric ar shoiléirsí áirithe.
The theory is based on certain axioms.

Other nouns in Irish

More everyday Irish nouns to learn next.

Axiom in Irish: frequently asked questions

What is the Irish for axiom?

The Irish for axiom is soiléirse (pronounced “SIL-ayr-shuh”). It’s a feminine noun and the plural is soiléirsí.

How do you pronounce soiléirse in Irish?

Soiléirse is said like “SIL-ayr-shuh” (IPA /ˈsʲɪlʲeːɾʲʃə/).

What is the plural of axiom in Irish?

The plural of soiléirse is soiléirsí; with the article, na soiléirsí means “the axioms”. The genitive plural is soiléirsí, as in fírinne na soiléirsí (the truth of the axioms).

Why does soiléirse change to shoiléirse?

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

How is 'soiléirse' different from 'teoirim'?

A 'soiléirse' (axiom) is accepted without proof, while a 'teoirim' (theorem) is something that must be proved from axioms.

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