I. adjective
1.
not having the same center
not concentric but eccentric circles
Synonyms: off-center
Related Word: uncentered; off-balance, unbalanced
Contrasted words: centered; balanced
Antonyms: concentric
2.
Synonyms: strange 4, curious, erratic, idiosyncratic, odd, oddball, peculiar, queer, singular, weird
Related Word: anomalous, irregular, unnatural; exceptionable, exceptional, quirky, quizzical; beeheaded, ||dippy, wacky; fantastic, grotesque
Contrasted words: customary, habitual; natural, normal, regular, typical
II. noun
one who deviates from established patterns especially in odd or whimsical ways
an eccentric who filled his house with statues of himself
Synonyms: case, character, ||duck, oddball, oddity, original, quiz, ||spook, ||wack, zombie
Related Word: bohemian, maverick, nonconformist, unconformist; dissenter, heretic; caution, coot, ||geezer; crackpot, crank, freak, kook, screwball
Idioms: queer duck ( or potato)
Contrasted words: conformer, conformist, conventionalist, traditionalist; bore, bromide, dullard