Top definition
DUMF is the one syllable word meaning dumb-fuck or dumfuck
Ellen forgot to turn off her headlights, what a DUMF
by JEBalke January 07, 2008
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2
Designated Unatractive Male Friend of a Woman whohangs around her all day (but is NEVER her husband or boyfriend) usualy also a GBF
I saw thsis hot chick but she was this ugly ass man with no teeth and was a fat as a van he was sucha DUMF
by Trixilater September 04, 2015
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