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not hold anything back, sparing nothing
Both sides went all-out when the game started.
all-out by Light Joker December 7, 2005
to go balls deep, or to give it your all. to try really hard and give a situation 100% of your attention
"man, pedro really goes all-out"
all-out by vizcacha July 1, 2006
An "Electro Pop" group from Boston, Massachusetts. Known mostly for their single, "Lights".

The group released their first single "Timebomb" in 2008, it didn't get much success. But they kept trying anyway, they then released their first album, "The Get Down", followed by their single, "Lights". Summer of 2010, They released their free mixtape, "All Out Everything" Which has had more success than The Get Down did, but it still hasn't made it big.

The duo is reported to be releasing album #3 in the summer of 2011.

All Out consists of Matt McCormick and Joe Skutnik.
Person one: "I'm looking for new music, any ideas? I listen to 2 AM Club and 3oh!3"

Person 2: "You should check out All Out, they have free music available, and their style is similar to the groups you like."

PUT YOUR A.O's UP!!!
All Out by Paige Loves AO October 8, 2011
The opposite of "all in"
It's something a poker player says when mucking a loser hand
^ I'm all in *shoves*
> I'm all out *folds*
all out by thurb May 17, 2021

all out attack 

To go out and get as drunk as it is possible in a short period of time. Do this by drinking quickly and accompanying every drink with shots of Aftershock, Sambuca, Absinth or whatever else the bar has. Called "binge drinking" by our wonderful government.
Were on all out attack tonite boys!!
Are we attackin it tonite boys?
Fuck, I think I'm dying, we attacked it last nite!!
all out attack by bald eagle March 16, 2006

All out winging it 

When someone does an important project or something they forgot about last minute. This generally involves making it look better than it actually is.
Jason: Dude did you do the project?
Mason: Oh hell im all out winging it.

Jason: good luck getting a B.
More from Urban Dictionary
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
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