grían

See also: grian, grian-, griən, and gri͡an

Old Irish

From Proto-Celtic *grēnā. Further etymology uncertain. Possibly from Proto-Indo-European *gʷʰer- (“to be warm, hot”).^[1]

Matasović reconstructs Proto-Celtic *gʷrensnā, from Proto-Indo-European *gʷʰrenso- (“warm”) (whence Sanskrit घ्रंस (ghraṃsa, “heat of the sun”) and Proto-Celtic *gʷrensos, whence Middle Welsh gwres (“heat (of the sun, fire)”), compare also Proto-Celtic *gʷrīns, whence derived *gʷrīnsā > Old Irish grís (“heat (of the sun), fire, embers”).

grían f

Feminine ā-stem
	Singular	Dual	Plural
Nominative	grían^L	gréin^L	gríana^H
Vocative	grían^L	gréin^L	gríana^H
Accusative	gréin^N	gréin^L	gríana^H
Genitive	gréine^H	grían^L	grían^N
Dative	gréin^L	gríanaib	gríanaib
Initial mutations of a following adjective: ^H = triggers aspiration ^L = triggers lenition ^N = triggers nasalization

Old Irish mutation
Radical	Lenition	Nasalization
grían	grían pronounced with /ɣ(ʲ)-/	ngrían
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

^ Nikolaev, Alexander (2009) “The Germanic word for ‘sword’ and delocatival derivation in Proto-Indo-European”, in The Journal of Indo-European Studies‎, volume 37, number 3/4 (PDF), archived from the original on 8 August 2014, page 478