1. in a way that is deliberately contrary or unreasonable
2. in a way that goes against what is expected or desired

Examples

• She perversely refused to accept help when she needed it most.
• The weather turned perversely cold just as summer vacation began.
• He perversely chose the most difficult route up the mountain.
• The machine perversely broke down right before the important presentation.
• The child perversely insisted on wearing winter clothes in July.
• The stock market perversely rose despite the bad economic news.