n. 25B6; noun EXPERT, authority, specialist, pundit, savant; arbiter of taste, aesthete; gourmet, epicure, gastronome; informal buff; N. Amer. informal maven.
CONNOISSEUR
Meaning of CONNOISSEUR in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012