(of a person or their actions) Showing a deliberate and obstinate desire to behave in a way that is unreasonable or unacceptable, often in spite of the consequences
Contrary to the accepted or expected standard or practice
(of a verdict) Against the weight of evidence or the direction of the judge on a point of law
willfully deviating from desired or expected conduct [adj]
Sexually perverted
wilfully deviating from desired or expected conduct [adj PERVERSER, PERVERSEST]