A short form for the word definetly.
"I'm defs keeping this on the DL."
"Are you going to John's tonight?" - "Defs."
by coolkidddd September 12, 2006
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1. To be worried or scared about something, frequently used to describe a drug-induced state of paranoia.

2. To vomit.

Origin: Great Grimsby. Possibly originally evolved from the word 'defecate', via 'shitting it'.
1. 'I'm deffing', 'She's deffin'-out', 'I deffed-out', 'Deff-out'

2. 'I just deffed'. 'He's deffin''.
by spacecaked March 15, 2011
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A shortened word for definitely
by cwperson October 4, 2011
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Slag for 'Deffinitly Not!'
"Wanna kiss my ass?" "Def Not!"
by Briggmyster June 17, 2006
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Most definitely never, ever EVER going to happen.
Your good friend: "You and that girl are cute together!"
You: "Def-not."
by Logan Hahn February 14, 2009
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The Asian girl asked, "What's your fav. position?"
Digitus answered, "Def. the doggy-style... Do you wanna do it?"
The Asian girl replied, "Nah, later maybe. I mean we just did in the forest this morning! We should not do it for a couple of days."
Digitus replied, "You're right. Do you want to watch some TV?"
The Asian girl answered, "Yeah."
They sat down as they turned on the TV.
by Digitus July 7, 2005
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definately. offshoot of fosho, except less black. Can be considered the white man's fosho.
andrew: k party next fri at my house
patrick: for def i'm going
by Patrick Charles January 12, 2006
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