HeyRua Get the app

Reasoning in Irish (Réasúnaíocht): Meaning, Pronunciation, Usage

‘réasúnaíocht’ also means: rationality

The Irish for reasoning is réasúnaíocht, a feminine noun.
Updated October 2026Report a mistake

How to say “reasoning” in Irish

Irish:
réasúnaíocht
English:
reasoning, rationality
Word type:
noun
Gender:
feminine, third declension
Pronunciation:
“RAY-soo-nee-ukht”  /ˈreːsˠuːn̪ˠiːəxt̪ˠ/
Various forms
Genitive singular:
réasúnaíochta, na réasúnaíochta (e.g. cumas réasúnaíochta, reasoning ability)

What does “réasúnaíocht” mean?

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

reasoning
The process of thinking logically to reach a conclusion.Also: logical thinking, ratiocination.
1 other meaning: rationality
2rationality
The quality of being reasonable or based on reason.Also: reasonableness, rationale.

Other Irish words for reasoning: réasún (reason)

“Réasúnaíocht” with the article

Here is réasúnaíocht after the article (an t-alt).

an réasúnaíocht
the reasoning
No change after an

“Réasúnaíocht” in a sentence: Irish examples

Common Irish sentences using réasúnaíocht, the Irish word for reasoning.

Ní thuigim an réasúnaíocht atá taobh thiar de sin.
I don't understand the reasoning behind that.
Bhí a réasúnaíocht lochtach ón tús.
His reasoning was flawed from the start.
Tá cumas réasúnaíochta láidir ag an bpáiste sin.
That child has strong reasoning ability.
Chuir sí a réasúnaíocht os comhair an choiste.
She put her reasoning before the committee.
Is ceist réasúnaíochta í seo, ní ceist mothúchán.
This is a question of reasoning, not of feelings.
Ní raibh aon réasúnaíocht ina chuid cainte.
There was no reasoning in what he said.
Múintear réasúnaíocht loighciúil sa rang matamaitice.
Logical reasoning is taught in the maths class.

Other nouns in Irish

More everyday Irish nouns to learn next.

Reasoning in Irish: frequently asked questions

What is the Irish for reasoning?

The Irish for reasoning is réasúnaíocht (pronounced “RAY-soo-nee-ukht”). It’s a feminine noun. Depending on context it can also mean rationality.

How do you pronounce réasúnaíocht in Irish?

Réasúnaíocht is said like “RAY-soo-nee-ukht” (IPA /ˈreːsˠuːn̪ˠiːəxt̪ˠ/).

Does réasúnaíocht have a plural?

No plural form is given for réasúnaíocht in the standard. Many abstract and mass nouns in Irish have no plural.

Does réasúnaíocht have more than one meaning?

Yes. Réasúnaíocht can mean reasoning or rationality, depending on context; the first is the most common.

How does 'réasúnaíocht' differ from 'réasún'?

'Réasún' means reason, a cause or the faculty of reason, while 'réasúnaíocht' is the process of reasoning or argument built on it.

Learn Irish by
actually speaking it

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

7-day free trial. Cancel anytime.

The HeyRua app home screen