Propensity (noun)

A natural inclination or tendency to behave in a particular way or to enjoy certain things.

Origin:

From latin propensitatem, from propensus, past participle of propendere "to incline towar.d"

Examples:

1. He had a propensity for telling jokes at inappropriate times.
2. She had a propensity for reading detective novels.
3. The company's propensity for risk-taking led to its downfall.
4. The dog's propensity for digging holes in the backyard was a constant source of frustration for its owner.
5. The child's propensity for asking questions made it difficult for the teacher to maintain control of the class.