Top definition
A word you use when you can't think of a proper word, or if you're caught off guard
Who the ujamaflip are you!?
by TheProdigy_Dan April 13, 2009
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Jul 29 Word of the Day
Someone who used to be a potential girlfriend/boyfriend, but no longer is.
Tim: Zack, is that your exgirlfriend?
Zack: No, she's an expotential. We never actually dated...
by brownsuite September 24, 2011
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