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Adj. used to describe the outward manifestation of negative attributes or anti-social beliefs.

cross-ref. "hater"
Worker 1: It's not that she's unattractive, it's just that she's "ugly on the inside" and that shows on her face.
Worker 2: well, she's an HR hussy, they are ALL ugly on the inside.

Voter 1: it's weird, he looks good in photos but in real life you can see he's "ugly on the inside".
Voter 2: total hater, seriously. he's so racist and sexist what do you expect? he's ugly on the inside.
by Elly Adams August 19, 2010
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