noun
abnormality
Synonyms: anomaly, bizarreness, characteristic, conversation piece, curiosity, eccentricity, extraordinariness, freak, freakishness, idiosyncrasy, incongruity, irregularity, kink, oddness, outlandishness, peculiarity, phenomenon, queerness, quirk, rarity, singularity, strangeness, unconventionality, unnaturalness
Antonyms: convention, habit, norm, normality, regularity, standard, usualness
noun
person who is very different
Synonyms: case, character, duck, eccentric, fish out of water, maverick, misfit, odd bird, original, rara avis, screwball, weirdo
Antonyms: conservative, normal