def def 

a cooler way to say "definetely", used frequently by potheads

1. "I'm def def wasted"

2. "You should def def call me back"

def def by Mr.Byrne August 6, 2008

Hi-Def 

A polite way of greeting a hearing impaired individual.

"Look, there comes old Mrs. Danielson. The poor thing just can't hear anything anymore. Hi-Def!"

"That filthy old man has been sitting on the street for so long that his darn ears have done rotted plumb off. Hi-Def!"

"Hey that's Pete Townsend over there, isn't it? Hi-Def!"

Hi-Def by www.babysue.com January 2, 2009

mos def 

a fly MC, often apperaring alongside Talib Kweli, The Roots, or Common

mos def is one ill nigga, son

mos def by Ponyboy August 3, 2003

mos def 

Slang for 'most definitely'

"Wan' a cig, man? "Mos' def!"

mos def by David Allison August 21, 2003

mos def 

A man who can not only act with 5 star ability, but can also create some of the best shit out on recording ever.

Mos Def yet an actor of decent fame still keeps his hip-hop true.

mos def by Paul October 2, 2003

Def Leppard 

80's hard rock quintet, famous for there one armed drummer, creative guitar riffs, one armed drummer, and lead singer, Joe Elliott's Mullet

"I'm hot sticky sweet from my head to my feet, yeah!!!"

Def Leppard by Slang625 May 21, 2003

Def Noodles 

An incredibly annoying and unfunny YouTube "comedian."

Person 1: Who is Def Noodles?
Person 2: Some weirdo who makes Amy Schumer look like a professional.

Def Noodles by nikodotexe September 2, 2022