fidbae

Old Irish

From Proto-Celtic *widubiyom, from *widu- (“wood”) +‎ *-biyom (“cutting”).^[1]

fidbae n (genitive fidbai)

Neuter io-stem
	Singular	Dual	Plural
Nominative	fidbae^N	fidbae^L	fidbae^L
Vocative	fidbae^N	fidbae^L	fidbae^L
Accusative	fidbae^N	fidbae^L	fidbae^L
Genitive	fidbai^L	fidbae^L	fidbae^N
Dative	fidbu^L	fidbaib	fidbaib
Initial mutations of a following adjective: ^H = triggers aspiration ^L = triggers lenition ^N = triggers nasalization

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

^ Matasović, Ranko (2009) “*widu-”, in Etymological Dictionary of Proto-Celtic (Leiden Indo-European Etymological Dictionary Series; 9), Leiden: Brill, →ISBN, page 420