Top definition
Combination of "super" and "retarded". Means something/someone is extremely stupid or irritating. See supertard.

Chris: "Hey, let's go put on funny hats and then run across the highway!"

Brian: "That sounds supertarded."
by SUPERTARD September 27, 2007
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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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