crotchets, curiosities, eccentricities, erraticisms, individualisms, kinks, mannerisms, oddities, peculiarities, quiddities, quips, quirks, singularities, tics, tricks, twists

affectations, airsattributes, characteristics, marks, properties, traitscustoms, habits, patterns, practices(also practises), ways, wontsaddictionsabnormalities, neuroticisms, perversionsdispositions, geniuses(or genii), leanings, partialitiesbents, inclinations, penchants, predilections, predispositions, proclivities, propensities, tendencies, turnsattitudes, characters, humors, identities, individualities, natures, personalities, temperaments