Thanks to
aralias, I've discovered
Save the Words, a website dedicated to keeping archaic words from going extinct. It's quite a cute site, so feel free to browse. Fair warning, the words will beg you to "Pick me!" to save from extinction.
I've adopted "vultuous", an adjective meaning "having a sad or solemn expression". Now I have to use my word in everyday life. I may have to write a Severus Snape fic just for the occasion.