Is there a word that means "a person who delights in the misfortune of others?"

There is, Darkpond. But I'm not going to tell you.

BTW over in Wordcraft, they have taken up the cause of convincing OED to recognize "epicaricacy" as a word.

So far, OED has demurred.

Do you think they might be taking some kind of epicaricastic pleasure in that?