PERVERSE

[adjective] [disapproving] - (of a person) intentionally acting in a way that is unreasonable or harmful, or (of an action or feeling) unreasonable or unexpectedJack was being perverse and refused to do anything the rest of us wanted to do.After everything I had heard about the city, it would have been perverse to have passed so close by without stopping to visit.She took a perverse delight in hearing that her sister was getting divorced.The police investigating the case believed that the murderer was a person who took a perverse pleasure in violence.He felt a sense of perverse pride in acknowledging that he had made a mistake.