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Giving as much effort as possible; not holding back.

'All' refers to everything, and 'out' is an intensifier. So 'all-out' means 'everything and more'.
1) Karen went all-out in the race, and won a gold medal.

2) Captain Barne's final act was to order an all-out assault on the fortress.
by VAKI5 May 10, 2005
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Aug 3 Word of the Day
A way of expressing that someone is sexually attractive. It is often used with irony or playfulness.

Comes from the verb “breed” which is to copulate with intent of bearing children.

For someone to be truly “breedable” they need to be fertile.
Anon: You are looking mighty breedable this fine evening, m’lady.
Stacy: Please don’t say that to me.
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Brad: Woh, you look submissive and breedable, Becky.
Becky: Wow, thanks. *sex*
by 100PercentEthylAlcohol July 14, 2021
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2
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"
by vizcacha July 01, 2006
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4
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!!!
by Paige Loves AO May 26, 2011
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5
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*
by thurbsy May 17, 2021
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