Synonyms of maniac in English:

maniac


See US English definition of maniac

See UK English definition of maniac

See Spanish definition of maníaco

noun

1‘a homicidal maniac’

SYNONYMS
lunatic, madman, madwoman, mad person, deranged person, psychopath, psychotic
informal loony, fruitcake, nut, nutcase, nutjob, cuckoo, psycho, screwball, head case, headbanger, sicko
British informal nutter
Scottish informal radge
North American informal crazy, kook, meshuggener, nutso
US informal wing nut

2‘a football maniac’

SYNONYMS
enthusiast, fan, addict, devotee, aficionado
informal freak, fiend, nut, buff