The opposite of overchicked.
When a better-than-average-looking guy ends up with a chick that's less attractive than he is. This is often the result of a chick that's willing to put out and guy that is less than confident in himself.
Sally is 5'03, 200lb and spotty. Harry is 6'04, healthy, wealthy and handsome. How Sally managed to snare Harry is a mystery. He definitely underchicked on this hook up.
by PhanTim September 13, 2008
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When a guy dates a girl who is not as good looking as he is.
You can't bring Sarah to the party, bro. Don't underchick.
by lastknownname March 19, 2014
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