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to nap longer than you really wanted, and then be unable to fall asleep that night. coined by UkranianLimbs and added by CAMPlikeaCHAMP
me: im about to crash
yosef: na, i overnapped earlier, ill be up all night
by CAMPlikeaCHAMP May 14, 2011
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Napping far longer than originally intended. Due to faulty alarm clocks, massive sleep deprivation, or intense drinking the night before.
I was going to do my homework, but my alarm clock didn't go off and I overnapped.

The hell?? My test started a half hour ago, I overnapped again!

Jesse was late to class again; he's a pretty consistent overnapper.
by Destroyyoutoo June 21, 2009
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an overnap is a napover. similar to a sleepover. it's origins derive from someone trying to rhyme with overlap.
yo girl you trying to get down on an overnap real quick?
by sandyravage June 25, 2016
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