a thing for, affinity, aptitude, aptness, bent, bias, cast, conatus, conduciveness, delight, diathesis, disposition, eagerness, inclination, leaning, liability, liking, penchant, predilection, predisposition, prejudice, probability, proclivity, proneness, propensity, readiness, sensitivity to, soft spot, susceptibility, tendency, tropism, turn, twist, warp, weakness, willingness