[pəˈvəːs], (Adjective)

Definitions:
- showing a deliberate and obstinate desire to behave in a way that is unreasonable or unacceptable
(e.g: Kate's perverse decision not to cooperate held good)

- contrary to the accepted or expected standard or practice
(e.g: in two general elections the outcome was quite perverse)

- sexually perverted
(e.g: an evil life dedicated to perverse pleasure)


Phrases:

Origin:
late Middle English (in the sense ‘turned away from what is right or good’): from Old French pervers(e), from Latin perversus ‘turned about’, from the verb pervertere (see pervert)