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Definition 2025

eochair

eochair

Irish

Noun

eochair f ‎(genitive singular eochrach, nominative plural eochracha)

key
An bhfuil eochair an tí agat?‎
Do you have the house key?
(music) key; clef

Declension

Declension of eochair

Fifth declension

Bare forms

Case	Singular	Plural
Nominative	eochair	eochracha
Vocative	a eochair	a eochracha
Genitive	eochrach	eochracha
Dative	eochair	eochracha

Forms with the definite article

Case	Singular	Plural
Nominative	an eochair	na heochracha
Genitive	na heochrach	na n-eochracha
Dative	leis an eochair don eochair	leis na heochracha

Derived terms

Terms derived from eochair

dordeochair f ‎(“bass clef”)
eochairchlár m ‎(“keyboard”)

eochairdheacracht f ‎(“key difficulty”)
eochairfhreagracht f ‎(“key responsibility”)

eochairléacht f ‎(“keynote lecture”)
eochairthosaíocht f ‎(“key priority”)

Mutation

Irish mutation
Radical	Eclipsis	with h-prothesis	with t-prothesis
eochair	n-eochair	heochair	t-eochair
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

References

↑ Matasović, Ranko (2009) Etymological Dictionary of Proto-Celtic (Leiden Indo-European Etymological Dictionary Series; 9), Leiden: Brill, ISBN 978-90-04-17336-1, page 217

“1 eochair, echair” in Dictionary of the Irish Language, Royal Irish Academy, 1913–76.
“eochair” in Foclóir Gaeḋilge agus Béarla, Irish Texts Society, 1927, by Patrick S. Dinneen.
"eochair" in Foclóir Gaeilge-Béarla, An Gúm, 1977, by Niall Ó Dónaill.