airchinnech

Old Irish

From airchenn (“prominent, leading”) (from ar- +‎ cenn, literally “having the head in front”) + -ach

airchinnech m (genitive airchinnig, nominative plural airchinnig)

Masculine o-stem
	Singular	Dual	Plural
Nominative	airchinnech	airchinnech^L	airchinnig^L
Vocative	airchinnig	airchinnech^L	airchinnchiu^H
Accusative	airchinnech^N	airchinnech^L	airchinnchiu^H
Genitive	airchinnig^L	airchinnech	airchinnech^N
Dative	airchinniuch^L	airchinnchib	airchinnchib
Initial mutations of a following adjective: ^H = triggers aspiration ^L = triggers lenition ^N = triggers nasalization

Old Irish mutation
Radical	Lenition	Nasalization
airchinnech (pronounced with /h/ in h-prothesis environments)	unchanged	n-airchinnech
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.