Words that aren't used a lot..
Advantageous, obligatory, societal, niggardly, snollygoster, interrobang, Ishkabibble, the list goes on.
Oh the wonders of attending an IB school..
Silly article that reflects student opinions: http://uncyclopedia.wikia.com/wiki/IB
Wiki: http://en.wikipedia.org/wiki/International_Baccalaureate