English
masterous
From master + -ous.
Formed from master + -ous
Proto-Indo-European *méǵh₂s ‘big’
Old Latin magester
Latin magister ‘chief’
Old English mǣster
Middle English maister ‘master’
English master
Today it means
adj masterly
Language periods are conventional ranges, not dates for this word.
Etymograph / masterous