féineach

Irish

From féin +‎ -ach; probably a calque of English selfish.

féineach (genitive singular masculine féinigh, genitive singular feminine féiní, plural féineacha, comparative féiní)

Declension of féineach

Positive	Masculine	Feminine	(strong noun)	(weak noun)
	Singular		Plural (m/f)
Nominative	féineach	fhéineach	féineacha; fhéineacha²
Vocative	fhéinigh	fhéineach	féineacha
Genitive	fhéinigh	féiní	féineacha	féineach
Dative	féineach; fhéineach¹	fhéineach; fhéinigh (archaic)	féineacha; fhéineacha²
Comparative	níos féiní
Superlative	is féiní

¹ When the preceding noun is lenited and governed by the definite article.
² When the preceding noun ends in a slender consonant.

Irish mutation
Radical	Lenition	Eclipsis
féineach	fhéineach	bhféineach
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.