jeffinitely 

another word for something jeff would definitely do.

1.when Jeff comes home from school he's jeffinitely gonna take a nap.
2.he's jeffinitely gonna b in a bad mood today.
3.u want a Dr. thunder?
yea, jeff (y'no instead of def)

jeffinitely by cgmeza97 March 5, 2008

jeffinitely 

When a jeff says something that someone agrees with

That is jeffinitely a good point you make jeff.

jeffinitely by StarKill July 30, 2021

Effinitely

kind way of saying fuckin definitely.A blend of effin and definite.

--Jemma Jameson is effinitely on my to DO list!

Effinitely by hsktr October 13, 2012

jeffinately 

syn. Definately.

Man, Jeff jeffinately can't keep his mouff shut about Trisha.

jeffinately by BAKL June 11, 2003