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People who have no affect on your life, just there in the background.
Person 1: I'm gonna go shopping, wanna come with me?
Person 2: Nah, too many background people.
by TheFineLime July 17, 2018
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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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