deffo jeffo

an longer version of definitely, usually to a person to person with a name like jefferson or geoff.

person 1.we should defo go to the the rave
person 2.yeah deffo jeffo

by work colleague April 19, 2011

Deff

Short way to say definitely.

That's deff not cool.

by yayno February 25, 2017

dneuf

Normally one of the shortest friends in the group, but is a force to be reckoned with. He is strong physically and mentally and people should fear him. He also has an abnormally large Penis and works out a lot. He hates school and loves the NRA.

Tom: Damn do you see dneuf over there
Matthew: yea, he's been hitting the gym lately

Laila: he looks great in that t-shirt and those shorts make his booty look delicious

by Kylie Stewart March 26, 2018

deff

when a person heard negative decibels.

"he is a idiot, he must be deff"

by 1337-zorz May 7, 2008

Doeffus

A very sweet or cute person ho fucked up something very badly or did something very stupid.

(It comes from the Dutch language)

by Pascal August 22, 2003

Fo'Deff

definitely or yes

this word was invented by sierra. ©

Me: Want to do something Wedsday?
Her: Fo'Deff

by zmay989 March 30, 2009

deffie

Urbandictionary slang for "definition." When one integrates a tasty word into his/her vocabulary or wonders what one could be, one might look up the deffie on urbandictionary.com

Hey loser, whats the deffie of "douchebag?"

by M ! T c H May 13, 2005