adj. 25B6; adjective (informal) CLEVER, intelligent, bright, brilliant, gifted; intellectual, erudite, academic, scholarly, studious, bookish; informal smart; Brit. informal swotty.
stupid.
BRAINY
Meaning of BRAINY in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012