Wayne State University’s Word Warriors have released their top ten words to revive in 2011 . Starting in 2009, the Wayne State Word Warriors have highlighted obscure English words to bring back into common usage. Citing the vast vocabulary available in English – the biggest in the world, in fact — the Word Warriors contend that the depth and elasticity of the language is often disgarded for the quick, easy and accessible word. “Too often we limit ourselves to words that are momentarily popular or broadly applicable, and so rob ourselves of English’s inherent beauty and agility.”Click to see the list. I remember using "paroxysm" once and the guy I was talking to thought I had made it up. So I explained it. He still didn't believe me until he went and looked it up in a dictionary.
I do actually use schadenfreude on occasion, because I enjoy engaging in it so often.
P.S. The opposite of shadenfreude is "sour grapes." Those Germans have a word for everything.