an inclination or natural tendency to behave in a particular way 倾向,习性 she has a propensity for breaking plates. 她总会打破碟子。 [with infinitive]their innate propensity to attack one another. 他们互相攻击的内心习性。
语源
late 16th cent.: from archaic propense (from Latin propensus 'inclined', past participle of propendere, from pro- 'forward, down' + pendere 'hang') + -ity