A fork of Rural Dictionary
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
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''.
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.