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unvestment

The opposite of making an investment. Often realized as such when looking back in hindsight.

When you gain a short term goal by wasting long term prospects.
- turns out buying that 50,000 dollar sports car was a huge unvestment.
unvestment by Shaggo April 2, 2012

uncertainty principle 

1. States the position and momentum of a particle cannot be simultaneously measured with arbitrarily high precision. This is a crucial concept that is a part of quantum mechanics

2. The modern-day version states to never judge a girl's looks from a distance greater than or equal to 50 feet.
The uncertainty principle seems very straightforward.

Man, I was drunk last night at the party and the uncertainty principle totally slipped my mind. I swore he looked like a girl.
uncertainty principle by PVD October 5, 2004

Uncertain Times 

The mealy-mouthed, weasel-worded, chickenshit phrasing that brand advertising likes to believe is "reassuring" about massively negative global events, instead of using real words about what may be going on, like "pandemic" and/or "economic crisis" and/or "presidential incompetence".

Singular form: "(this) difficult time"
"In these "uncertain times", disposable toilet seat covers are more critical than ever, like airlines and vacation cruises. Remember, sometimes the only thing between you and a coronavirus droplet might be a Big Johnson Ass Gasket."
Uncertain Times by ToddUncommon March 30, 2020

Undestructible

Similar meaning to Indestructible. used when too drunk to remember the proper prefix.
Bob: Dude, check this phone out. It's totally undestructible!
Tom: Don't you mean indestructible?
Bob: Don't judge me!
Undestructible by Silverraider05 January 27, 2011

The Big Time Rush Uncertainty Principle 

That feeling of dread one gets when they are fearful of leaving their house because Big Time Rush will be having a live concert in their front yard.
Guy: Do you want to go out later?
Girl: No, I can't leave my house because of the Big Time Rush Uncertainty Principle.

Uncastrated 

Any male, living creature, whose testicles remain intact.
i am an uncastrated male.
Uncastrated by Funkjr85 May 19, 2019
More from Urban Dictionary
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

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
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