(short for) definitely (esp. in web chat and texting)

when you're hungover as shit after a spending a night drunk as a skunk

Kinda lame but useful and funny way of saying for sure or definately.
Also; fo deffs, def, deffy def, deffo McDefferson.

Gothenburg wigger slang. Short for definitely. Also used instead of "for real", when wanting to point out that something is very true or given.

Short for definately.
Said in normal conversations.

The combination of definitely and go.

Deffo is a short form for defenetly.