English
Whoser
From whose + -er.
Formed from whose + -er
Proto-Indo-European *kʷ- ‘the primary interrogative root’
…
Proto-Germanic *hwaz ‘who’
Proto-Germanic *hwes
Old English hwæs
Middle English whos ‘whose’
English whose
Today it means
noun A fan of the British improvisational comedy television series Whose Line Is It Anyway? or its American remake.
Language periods are conventional ranges, not dates for this word.
Etymograph / Whoser