penchant

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

favor, one-sidedness, partisanship, prejudice; endowment, faculty, flair, genius, gift, knack, talent; addiction, appetite, fancy, fondness, like, liking, preference, taste; forte, speciality, specialty; convention, custom, habit, pattern, practice ( practise), routine, trick, way, wont; eccentricity, idiosyncrasy, kink, oddity, peculiarity, quirk, singularity

allergy, averseness, aversion, disfavor, disinclination, dislike, disliking, disrelish, distaste; detachment, impartiality, neutrality, objectivity; apathy, disinterestedness, indifference, insouciance, nonchalance, unconcern