Nerd that I am, I subscribe to both the Merriam-Webster Word of the Day and another service simply called A.Word.A.Day. Here is today's selection from AWAD:
lexiphanes (lex-SIF-uh-neez) noun
One who uses words pretentiously.
I like it. I like it so much that I'm going to incorporate it into my working vocabulary...just call me Lexi