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”

Deffy by Proper Tony November 27, 2020

Deffy 

Shortened version of definitely. Often used by teens.

A: "Look at that"
B: "That's cool"
C: "Deffy"

Deffy by Sarah June 28, 2004

Deffy 

Sebastian's way of saying definitely.

Someone: Yo, you tryna watch that movie??

God Named Sebastian: Broooo, deffy bro.

Deffy by Sebchi April 2, 2020

deffy 

Slang for "definition".

Yo teach, what's the deffy of "missile tits"?

deffy by Meo Bets@ June 28, 2006

Deffy 

A person who’s certain about things

Ayo we deffy gon hit a lick

Deffy by Layy Andretti November 28, 2021

deffy 

Slang for 'definitely' or 'definition'.

"Deffy do it right now!"
"What's the deffy?"

deffy by Hybrix November 3, 2023

deffy 

To make an emberassment of oneself. To fail at suicide in an attempt of gaining attention.

Deffy slit his wrists like a little school girl.

deffy by Anonymous October 2, 2003