peculiarity

1 an odd or peculiar habit had the peculiarity of constantly fussing with his hair Synonyms crotchet, curiosity, eccentricity, erraticism, individualism, kink, mannerism, oddity, idiosyncrasy, quiddity, quip, quirk, singularity, tic, trick, twistRelated Words affectation, airs; attribute, characteristic, mark, property, trait; custom, habit, pattern, practice (also practise), way, wont; addiction; abnormality, neuroticism, perversion, weirdness; disposition, genius, leaning, partiality; bent, inclination, penchant, predilection, predisposition, proclivity, propensity, tendency, turn; attitude, character, humor, identity, individuality, nature, personality, temperamentNear Antonyms conformity, sameness

2 something that sets apart an individual from others of the same kind as its name indicates, the red-winged blackbird has the distinctive peculiarity of a red patch on its wings Synonyms affection, attribute, attribution, character, criterion, diagnostic, differentia, feature, fingerprint, hallmark, mark, marker, note, particularity, characteristic, point, property, quality, specific, stamp, touch, traitRelated Words badge, indication, sign; emblem, symbol, token; charm, grace; excellence, merit, virtue; eccentricity, idiosyncrasy, oddity, quirk; individuality, singularity, uniqueness