FromMiddle Welshllydan, fromProto-Brythonic*llɨdan, fromProto-Celtic*ɸlitanos.
llydan (femininellydan,pluralllydanionorllydain,equativecyfledorlleted,comparativelledorlletachorllydanach,superlativelletaforllydanaf)
Note: Certain mutated forms of some words can never occur in standard Welsh.All possible mutated forms are displayed for convenience.