名词
1. （性格上的）倾向；习性
A propensity to do something or a propensity for something is a natural tendency that you have to behave in a particular way.
1. a disposition to behave in a certain way
e.g. the aptness of iron to rust
the propensity of disease to spread
Synonym: aptness
2. a natural inclination
e.g. he has a proclivity for exaggeration
Synonym: proclivityleaning
3. an inclination to do something
e.g. he felt leanings toward frivolity