Propensity : an inclination or natural tendency to behave in a particular way. Scepticism : a sceptical attitude; doubt as to the truth of something. Penchant : a strong or habitual liking for something or tendency to do something. Aversion : someone or something that arouses a strong dislike or disinclination. Proclivity : a tendency to choose or do something regularly; an inclination or predisposition towards a particular thing.