n. 25B6; noun MADMAN, MADWOMAN, maniac, lunatic, psychotic, sociopath; informal loony, fruitcake, nutcase, nut, psycho, schizo, head case, headbanger, sicko; Brit. informal nutter; N. Amer. informal screwball, crazy, kook, meshuggener.
PSYCHOPATH
Meaning of PSYCHOPATH in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012