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adj.; Someone who, no matter how fabulous you look, disregards your beauty and treats you like they would any other person. Your beauty is neutralized in the eyes of a beauty killer.
"I bet that smoking hot blonde will persuade him to buy her a drink. I mean, I would."

"Not with him, bro! That guy's a beauty killer. I bet he'll talk her into buying the first round, then he'll buy the second."
by Freehand March 05, 2012
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