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Definition 2024

deartháir m ‎(genitive singular dearthár, nominative plural deartháireacha)

Declension of deartháir

Irregular

Bare forms

Case	Singular	Plural
Nominative	an deartháir	na deartháireacha
Genitive	an dearthár	na ndeartháireacha
Dative	leis an deartháir don deartháir	leis na deartháireacha

Irish mutation
Radical	Lenition	Eclipsis
deartháir	dheartháir	ndeartháir
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

From Old Irish derbráthair, from derb ‎(“certain”) + bráthair ‎(“brother”), from Proto-Celtic *brātīr, from Proto-Indo-European *bʰréh₂tēr.

(Munster) IPA^(key): [dʲɾʲəˈhaːɾʲ] (as if spelled dreatháir)
(Aran) IPA^(key): [ˈdʲɾʲɑːhərʲ] (as if spelled dreáthair)
(Cois Fharraige) IPA^(key): [ˈdʲɾʲɑːɾʲ] (as if spelled dreáthair)
(West Connemara, South Mayo) IPA^(key): [ˈdʲɾʲiçaːɾʲ] (as if spelled dricheáir)
(Achill) IPA^(key): [ˈdʲaɾˠhaɾʲ] (as if spelled dearthair)
(Ulster) IPA^(key): [ˈdʲæːɾˠhaɾʲ], [ˈdʲæːɾˠhəɾʲ] (as if spelled deártháir or deárthair)