Definition:
* A tendency to do something that is often considered wrong or undesirable.
* A natural liking for or tendency towards something.
Synonyms:
* Predisposition
* Propensity
* Inclination
* Tendency
* Bent
* Affinity
Example:
* "He had a proclivity for gambling, which led him into serious debt."
* "She has a proclivity for wearing bright colors."
Usage:
Proclivity is often used to describe negative or undesirable tendencies, such as a proclivity for violence, lying, or substance abuse. It can also be used to describe positive tendencies, such as a proclivity for creativity or helping others.
Note:
While proclivity can refer to any inclination, it often carries a connotation of something that is either morally questionable or at least potentially problematic.