HeyRua Get the app

Eccentricity in Irish (Éalárnacht): Meaning, Pronunciation, Usage

The Irish for eccentricity is éalárnacht, a feminine noun.
Updated October 2026Report a mistake

How to say “eccentricity” in Irish

Irish:
éalárnacht
English:
eccentricity
Word type:
noun
Gender:
feminine
Pronunciation:
“AY-laar-nukht”  /ˈeːlˠaːɾˠn̪ˠəxt̪ˠ/
Various forms
Genitive singular:
éalárnachta, na héalárnachta (e.g. luach na héalárnachta, the value of the eccentricity)

What does “éalárnacht” mean?

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

eccentricity
The quality of being off-centre; in mathematics and astronomy, the measure of how far an orbit or curve deviates from a circle.Also: off-centredness, orbital eccentricity.
1 other meaning:
2eccentricity
Odd or unconventional behaviour in a person.Also: oddness, quirkiness.

“Éalárnacht” with the article

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

an éalárnacht
the eccentricity
No change: feminine nouns starting with a vowel keep their form after an

“Éalárnacht” in a sentence: Irish examples

Common Irish sentences using éalárnacht, the Irish word for eccentricity.

Tá éalárnacht bheag ag fithis an Domhain.
The Earth's orbit has a small eccentricity.
Ríomh an éalárnacht don éilips seo.
Calculate the eccentricity for this ellipse.
Is ionann luach na héalárnachta agus nialas i gciorcal.
The eccentricity value is zero for a circle.
Tá cáil ar a éalárnacht ar fud an bhaile.
His eccentricity is famous all over town.
Athraíonn éalárnacht na fithise thar na mílte bliain.
The orbit's eccentricity changes over thousands of years.
Tá éalárnacht mhór i bhfithis an chóiméid sin.
That comet's orbit has a large eccentricity.
Ní raibh aon éalárnacht ina hiompar.
There was no eccentricity in her behaviour.

Other nouns in Irish

More everyday Irish nouns to learn next.

Eccentricity in Irish: frequently asked questions

What is the Irish for eccentricity?

The Irish for eccentricity is éalárnacht (pronounced “AY-laar-nukht”). It’s a feminine noun.

How do you pronounce éalárnacht in Irish?

Éalárnacht is said like “AY-laar-nukht” (IPA /ˈeːlˠaːɾˠn̪ˠəxt̪ˠ/).

Does éalárnacht have a plural?

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

Why does éalárnacht sometimes have a t or h in front of it?

Irish nouns beginning with a vowel take a prefix after certain words: an éalárnacht (the eccentricity), a héalárnacht (her eccentricity), a n-éalárnacht (their eccentricity).

What is the adjective related to éalárnacht?

The adjective is éalárnach, meaning eccentric or off-centre, as in ciorcal éalárnach, an eccentric circle.

Learn Irish by
actually speaking it

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

7-day free trial. Cancel anytime.

The HeyRua app home screen