schadenfreude (n.)

"malicious joy in the misfortunes of others," 1922 as a word in English, German Schadenfreude, literally "damage-joy," from schaden "damage, harm, injury" (see scathe) + freude "joy," from Old High German frewida "joy," from fro "happy," literally "hopping for joy" (from Proto-Germanic *frawa-; see frolic).

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. [Richard C. Trench, "On the Study of Words," 1852]
Related entries & more