If you're feeling a bit angry or irritated with someone, but are bored of using the same old words to describe them, why not flex your lexis and pick up a whole new vocabulary? It's fun and easy if you go to this link on the Merriam-Webster Dictionary site, and you'll be told a bit about each word too.
If you are interested in recent entries to various dictionaries, this link is helpful. Included among the latest entries are the blend Belieber (believer + Bieber), the intejection ew, which signifies disgust and should appear very close to Bieber's name every time it appears, and oneversation (a blend of one and conversation) which refers to a conversation where the other party doesn't listen to a word you say.
The American Dialect Society voted app as its word of the year for 2010. Which would be great if I had an i-Phone but I don't.