We do have a word for it. It's "schadenfreude", this is English, any time we run into a good word in another language we just steal it.
"The problem with defending the purity of the English language is that English is about as pure as a cribhouse whore. We don't just borrow words; on occasion, English has pursued other languages down alleyways to beat them unconscious and rifle their pockets for new vocabulary."
--James D. Nicoll