líach

See also: liach

Old Irish

líach f

Feminine ā-stem
	Singular	Dual	Plural
Nominative	líach^L	léig^L	líacha^H
Vocative	líach^L	léig^L	líacha^H
Accusative	léig^N	léig^L	líacha^H
Genitive	léige^H	líach^L	líach^N
Dative	léig^L	líachaib	líachaib
Initial mutations of a following adjective: ^H = triggers aspiration ^L = triggers lenition ^N = triggers nasalization

Probably derived from Proto-Indo-European *leyg- (“illness”).^[1]

líach

o/ā-stem
Singular	Masculine	Feminine	Neuter
Nominative	líach	líach	líach
Vocative	léig* líach**	líach
Accusative	líach	léig
Genitive	léig	léige	léig
Dative	líach	léig	líach
Plural	Masculine	Feminine/neuter
Nominative	léig	líacha
Vocative	líachu líacha†
Accusative	líachu líacha†
Genitive	líach
Dative	líachaib
Notes	modifying a noun whose vocative is different from its nominative *modifying a noun whose vocative is identical to its nominative † not when substantivized

Old Irish mutation
Radical	Lenition	Nasalization
líach also llíach after a proclitic ending in a vowel	líach pronounced with /l(ʲ)-/	unchanged
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

^ Beekes, Robert S. P. (2010) “λοιγός”, in Etymological Dictionary of Greek (Leiden Indo-European Etymological Dictionary Series; 10), with the assistance of Lucien van Beek, Leiden, Boston: Brill, →ISBN, page 869