1. (n.) Inclination; propensity; proneness; tendency.

2. (n.) Readiness; facility; aptitude.

a thing for affinity animus aptitude aptness bag bent bias cast character chosen kind conatus conduciveness constitution cup of tea delight diathesis disposition druthers eagerness eccentricity fancy fascination favor feeling for grain idiosyncrasy inclination inclining individualism kidney leaning liability liking make makeup mental set mettle mind mind-set mold mutual affinity mutual attraction nature partiality particular choice penchant personal choice predilection predisposition preference prejudice prepossession probability proneness propensity readiness sensitivity to set slant soft spot stamp strain streak stripe style susceptibility sympathy taste temper temperament tendency thing tropism turn turn of mind twist type warp weakness willingness