deff

1. A shorter verson of definitely.

2. One who can't hear shit.

3. A definition on urbandictionary.com.

1. "hey, dude, you should deff come over"

2. "i can't hear shit i'm so deff"

3. "go look at the deff for deff on UD"

by joeybnukkas April 21, 2007

Deffy

Deffy. Common word used in the Grimsby/Cleethorpes area and some parts of northern England. Often to describe feelings of intimidation or general odd behaviour.

“Mate you are one deffy guy you”
“Stop it mate ya deffin me out”
“Deffy cunt you”
“This is proper deffy this mate”
“Deffed out at Leeds fest me”

by Proper Tony November 27, 2020

Herf-Derf

An idiot.
One who makes stupid remarks.

Also known as a douchebag.

whata herf-derf!

by shakesbakes June 2, 2009

derf pilot

Having a taint fetish. Will ignore the meat and taters to get to that sweet stuff in the tweener.

I was looking for a little road head, but she's a derf pilot....couldn't get shit.

by greenmonstahmsn.com May 1, 2008

Derf King

Joseph Nixon (college laxer) known as the derf king, due to his addiction to zipper sparking.

Guy 1: Dude did you see the derf king hit top cheese that btb?
Guy 2: yeah, he's definitely getting some levi lovin' tonight!

by Abebe Kebede October 15, 2012

deffo kill

A kill that in competitive online games is aimed to stop the enemy attack

*Player 1 are you about to peek mid?*
*yea but i'll draw back shortly after a deffo kill
*alr seems good we need that*

by Sheix April 14, 2023

derf

a slang term for dry humping. Involves sexual contact through clothes

Did you get way derfing her last night.

by derfsurfer May 1, 2009