Deff

Short way to say definitely.

That's deff not cool.

by yayno February 25, 2017

most deff

most definitely (simple)

John: Hey jerry, was that test in math hard today?
Jerry: Oh, most deff!

by Michael Findley August 21, 2007

most deff

most deff= most deffenitly

dewd that most deff kix ass
this most deff is the best weed in all the land!!

by Jermo January 25, 2004

Mo Deff

Most Definetley: a saying that means most definetley. use when you are drunk,stoned or on the verge of pukeing.

Guy1:hey dude you wanna go party?
Guy2:Mo Deff man! Mo Deff!

by Garrett Silva May 6, 2005

Deff Totes

An abbreviation for "definitely totally" in other words, a term of agreement

Isa: want to go to the party with me?
Lilly: Deff Totes!

by Lilly Abree April 9, 2007

Fo Deff

Fo Deff
adverb
Full Meaning: For Deffinetly.
A verbal contract meaning that you must do this action.
Also, less strictly used as to agree with what is being said.

Girl One: "Can You Come Over This Weekend?"

Girl Two: "Fo Deff!"

by Sarah.M.Kennedy January 27, 2009

Beer Deff

When men have taken a good slathering of beer and start shouting at eachother while turning up the TV even louder. Common amongst football fans.

Heeeeyyyyyy! Who stole the damn chips?!!!
What yardline are then on now?!!! Heeeeeyyyyy!!! Kenn!!! Grab me another beer willl ya?!!!!

by exponentialhalitosis December 13, 2004