schadenfreude：幸灾乐祸。从德语里面来的。竟然没有查到英文同义词。

"What a fearful thing is it that any language should have a word expressive of the pleasure which men feel at the calamities of others; for the existence of the word bears testimony to the existence of the thing. And yet in more than one such a word is found. ... In the Greek epikhairekakia, in the German, 'Schadenfreude.' " [richard c. trench, "on the study of words," 1852]