Synonyms of eccentric in English:

eccentric


See US English definition of eccentric

See UK English definition of eccentric

See Spanish definition of excéntrico

adjective

1‘they were worried by his eccentric behaviour’

SYNONYMS
unconventional, uncommon, abnormal, irregular, aberrant, anomalous, odd, queer, strange, peculiar, weird, bizarre, off-centre, outlandish, freakish, extraordinary
idiosyncratic, quirky, singular, nonconformist, capricious, whimsical
outré, avant garde
informal way out, far out, offbeat, nutty, screwy, freaky, oddball, wacky, cranky, off the wall, madcap, zany
British informal rum, dotty
North American informal kooky, wacko, bizarro, in left field
ANTONYMS

ordinary, conventional


noun

1‘like all princes he was something of an eccentric’

SYNONYMS
oddity, odd fellow, unorthodox person, character, individualist, individual, free spirit, misfit
informal oddball, weirdo, weirdie, freak, nut, nutcase, case, head case, crank, crackpot, loony, loon
British informal one-off, odd bod, nutter, queer fish
North American informal wacko, wack, screwball, kook
US informal wackadoo, wackadoodle
Australian, New Zealand informal dingbat