1. proclivity Appetite is used only of the demands of the physical system, unless otherwise expressly stated, as when we say an appetite for knowledge; passion includes all excitable impulses of our nature, Synonyms: appetite, appetency, impulse, lust, propensity, craving, inclination, passion, relish, desire, liking, proclivity, thirst, disposition, longing, proneness, zest Antonyms: antipathy, disgust, distaste, indifference, repugnance, aversion, dislike, hatred, loathing, repulsion, detestation, disrelish
Synonyms for proclivity 
