It seems to me compersion sounds similar enough to compassion that the word might have been inspired by it. Then I would say compassion and compersion are two sides of empathy, compassion being for negative things and compersion for positive one. The opposite of compassion would be schadenfreude, the opposite of compersion jealousy.
Last edited by Tonberry; 09-20-2010 at 02:05 AM.
Reason: corrected a typo