library of words

My friend Duey has been giving me words from the GRE and telling me the meaning of them because I have decided that I need to expand my library of words. She's given me assuage, erudite, prodigal, enigma, fervid, placate, capricious, loquacious and ephemeral. I'll give you the deffinitions too:
assuage: to minimize, the make milder
erudie: a learned person, being learned or scholarly
prodigal: wasteful, to be wastefully or reclessly extravagant
enigma: a puzzle, puzzling person
fervid: to admire, heated or vehement in spirit, enthusiasm
placate: to please
capricious: adj, to be indecisive, erratic
loquacious: adj, to be talkative
ephemeral: n, anything short-lived, temporary; adj, lasting a very short time