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an explative, not unlike whoa. It is a more emphasized version of the word "damn" when it is used in the same way.
by Fatass February 13, 2003
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2
the word "Damn" spoken in proper southern dialect
Day-um child, don chou know better than ta gitch yo ass caught by the po-lece?
by grkdaisy February 09, 2003
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3
A slang used for the word damn. Often used by guys when they see a hot girl, or when they get busted.
As she walked by he turned to his friends and said "Dayum! That girl is fly"

Guy 1: My girl walked in out on me last night
Guy2: Dayum bro, shitty buzz
by Jesper7 September 16, 2007
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4
A word often interchangeable with the word damn. Used to convey extra damn-ness.
DAYUM GIRL! YOU GOT SOME HIDDEN STRENGTH!
by dj dz January 24, 2009
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5
Dayum, interchangeable with damn
As in, dayum that girl is fine!
Dayum I hate it when my car won't start!
Dayum I can't believe you just said that!
by Volcano October 01, 2005
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6
what u IMMEDIATELY say when u turn around an theres a fat bitch right behind u an u get scared
guy - (turns around) "DAYUM!"
girl - "what nigga?"
guy - "nothing...."
by ~Mimi~ May 04, 2008
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7
You would use this interjection when you see a fine piece of ass. As this girl walks past you, you must lean back and exclaim this this phrase with impeccable timing. This is especially useful after watching a fine lady such as Danielle Conklin pass by.
DAYUM DConk! Since when were u so hot?!
by Lou March 02, 2006
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