slow def check

making sure your friend is alright when away throwing up

yeah I'll go check on Bobby. I'll do a slow def check after my smoke.

by neu December 9, 2003

def-bombing

Attacking an Urban Dictionary definition with a sustained barrage of thumbs-down votes.

The definition had been selected as Word of the Day. It had earned thousands of thumbs-up votes and many fewer thumbs-down. But somebody out there was peeved. Every day they contrived to give it as many thumbs-downs as they could, usually four or five, in an act of def-bombing that only underscored the power of the definition itself.

by Monkey's Dad May 24, 2021

Def

An abbreviation of Definitely; a shortened way to express something without a doubt.

“We are def going to that party on Saturday! I already rsvp’d!”

by Jhudds07 September 4, 2021

Def Noodles

A failed YouTube comedian turned right-wing grifter

If you looked up the word clown in the dictionary, there would be a picture of Def Noodles next to it

by GuyWhoMakesUnfunnyJokes June 20, 2025

annoying (EKG def.)

When someone is funny, cool, a brown marcus stoinis greek-god like figure of power and authoriy

This bruddas hella annoying (EKG def.)

by former_child July 7, 2025

Def

An aura or vibe that catches peoples attention, has some weight to it and is generally, effortlessly cool or Impactful.

It can be used to describe a person, or an event or place.

When used to describe a person, you either have it or you don't, and it's not for you to decide.

Example: 'He has def energy'

Example 2: 'As soon as I walked into the room, I knew it was going to be a def night'

Example: 'This is def music'

Example: 'The way she sang was toned and def'

Example: 'The atmosphere last week was def, we should do it again'

by leaning-on-a-different-wall January 30, 2025

Defs, deUfs, defS

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Defs, deUfs, defS

by Angel234IsTheDarkSeraphim March 17, 2025