affection, affinity, aptitude, bent, bias, bone, disposition, genius, habitude, impulse, inclination, leaning, partiality, penchant, predilection, predisposition, proclivity, propensity, tendency, turn

favor, one-sidedness, partisanship, prejudiceendowment, faculty, flair, genius, gift, knack, talentaddiction, appetite, fancy, fondness, like, liking, preference, tasteforte, speciality, specialtyconvention, custom, habit, pattern, practice(also practise), routine, trick, way, wonteccentricity, idiosyncrasy, kink, oddity, peculiarity, quirk, singularity

allergy, averseness, aversion, disfavor, disinclination, dislike, disliking, disrelish, distastedetachment, impartiality, neutrality, objectivityapathy, disinterestedness, indifference, insouciance, nonchalance, unconcern