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UD

Uniform of the Day. A term used by military personnel and ex military to indicate which uniform is worn each day when there is more than one choice.
"The UD is dress blues" or "What is the UD?"
by Rev. Buzzkill January 22, 2020
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UD

( ͡° ͜ʖ ͡°) why??? UD is sooooooooooooo Giphy
by IamNotTheScratcher12345 July 26, 2020
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UD that shit

1)When randomly having a conversation with somebody, you create a word worthy of putting on Urban Dictionary.
2)To add a made up word to Urban Dictionary.
C: "My friend calls herself Lesbozilla."
B:"UD THAT SHIT!"
C:"KAYY :D"
by C <3 June 20, 2010
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UD Moron

Someone who makes up a word to insult a specific person in their specific lives that the rest of this audience doesn’t give a shit about. No one cares and you are ruining this site.
by Weird0Magnet March 2, 2025
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UD tic

Someone who has to look up every slang term they hear on Urban Dictionary.
Person1: It's just nasty when theres tagnuts stuck to the biffins bridge.
Person2: What?...hang on let me UD that
Person1: Mate you got a UD tic!
by mrlambo September 19, 2012
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UD-Nosed

The Slang term (UD-Nosed) meaning Undiagnosed person with ADHD symptoms

Also, the same Slang term as (UN-DIAG)

The Opposite Slang Term (D-Nosed)

Meaning a Person who’s Diagnosed and regularly prescribed medication.

A term that originated 2020-2025
Mark , you’re acting”UN-DIAG” right now.

Just calm down.

Dave has been “UD-Nosed” his whole life.

I can’t see how he’s been raw dogging it this entire time without treatment.
by MileDriver April 18, 2025
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Oldest Word on UD

The oldest written definition I found on the Urban Dictionary was written by a user named, Yebeka, on December 19, 1999, titled "mah". A word disambiguated from "my".

A way "mah" would be used in a sentence is as follows:

Don't touch mah truck.

If you've also been looking for the oldest definition, I suggest you check out their definitions. Most were written in 1999 despite the oldest thought definition to be "the man" written in 2003
The oldest word on UD is "mah" written by Yebeka in December of 1999
by mfomari March 27, 2025
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