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6mm Caseless 

"You dawg, dat Deagle's 6mm caseless, right?"
"Yeaaah, nigga."
6mm Caseless by Samopal January 20, 2009

extremely careless 

Regular citizen definition: grossly negligent (i.e. criminal)

Hillary Clinton definition: presidential
Person 1: Dude, the FBI Director just said that Hillary Clinton was extremely careless in handling highly classified information. But I guess they're not recommending any charges be made.

Person 2: Extremely careless - doesn't that basically mean she was grossly negligent? I thought that gross negligence in transmitting classified information is prosecutable under the Espionage Act. Sounds like she should be considered a criminal.

Person 1: Nah bro, that just means she's considered presidential material.
The act of being without a crush. Single af. Free. No feelings.
"I'm finally crushless! I let go of those feelings faster than I caught em."
Not giving a single fuck about anyone else’s opinion and living life with no boundaries bc yolo
Care less and be careless!
Careless by Carelys September 30, 2018

cluseless 

KLūS-less; adjective. used to describe someone who is both clueless and useless
That guy doesn't know what he's doing, and he has no purpose in being here. He is completely cluseless.
cluseless by Rotorgust January 16, 2014

Careless talk 

When someone speaks without sensitivity or regard for other peoples feelings who may be in the proximity.
Jamie meets a girl with a Purple dress at an elevator, he smiles and walks away. Later Jamie decides to look up the name of the girl and sends her an email which reads. "Sorry for staring at you earlier. It's just Purple is my favorite colour. Let me know when you decide to get the lift again and I will stare some more." - This could be seen by some as being an unwelcome email and a prime example where "Careless talk"was used.
Careless talk by carebear01 October 22, 2013
More from Urban Dictionary

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026
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