Old skool version of low it meaning forget it, dont bother or dont even go there but in a nice kinda way
man sez 'bruv, shall we jack the offie'
man&man 'nah def it, its too on top'
by moi&dem January 15, 2007
Get the def it mug.
def /def/ adj. to describe a person, thing, or event that is cool. iarchaic, circa 1981/i
"yo, mah pizzles, I got da hook-up at this def new club. It's suppose ta be off da hizzy"
by Jay January 20, 2003
Get the def mug.
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
Get the defs mug.
It means like terrific or great or excellent
"I bet you were def." ~Fresh Prince Of Bel Air when he's talking to Ashley about her singing. 1st episode
by Lady_Rae_Marie January 11, 2006
Get the def mug.
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
Get the Deffing mug.
A shortened word for definitely
She is defs the hottest girl out
by cwperson October 4, 2011
Get the Defs mug.
Def ain't short for Deffinitly.

Def means cool, ill, dope. You know.
Yo man Bone Thugs N Harmony are one of the most def groups of all time.
by some polak September 18, 2004
Get the def mug.