Vice

Immoral or depraved behavior or habit

A vice is a practice, behaviour, or habit generally considered morally wrong in the associated society. In more minor usage, vice can refer to a fault, a negative character trait, a defect, an infirmity, or a bad or unhealthy habit. Vices are usually associated with a fault in a person's character or temperament rather than their morality.

This keyword could refer to multiple things. Here are some suggestions: