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To make a mistake directly causing the failure of a plan or action. Portmanteau of Foil and Fumble.
The Green Shift idea was a major foible for the Canadian Liberal Party in 2008.
Foible by Death Monkey April 4, 2009
Related Words

Fielding’s Foible

(n.) A catastrophic social event where a person mistakes a corporate hierarchy chart for a dating roster.

A man who treats every "Performance Review" as a performance of a different kind. A Fielding's Foible is characterized by a complete lack of shame, a lingering smell of cheap cologne, and a rather concerning drip-feed of evidence for the HR department.
If 'name' asks the boss for a raise one more time while winking, he's committing a major Fielding’s Foible. I'm pretty sure the CEO has filed a restraining order.
The little bit of ass that hangs out below the daisy dukes
Did you see the Fiblets on that
One when she walked by
Fiblets by Branddon Carter May 1, 2015
A pipe made from aluminum foil bowl for smoking of tobacco or marijuana.
I couldn't find a new pipe, so i just made a foiler myself.
foiler by angrymofo1 February 6, 2006
1.One who will continuously publicize others who posses foibles.
2.Such actions are constant.
3.Such thoughts eventually become subconscious to the point where reasonable thinking is unattainable
“Look at that guy, he walks like a duck, and I’ve never seen him brush his teeth.. Oh g-d, I’m such a foibler.”
Foibler by Jfrymer December 18, 2005

Foiled Again 

A term often used by evil villains in cartoons when the super hero would ruin a plan of theirs by destroying a certain machine or revealing to the public the evil master minds' idea.
(Super Fred just blew up Evil Dr. Tims' death ray before Evil Dr. Tim could destroy Peace Town) Evil Dr. Tim screams "Curses, foiled again!"
Foiled Again by Flexco404 January 20, 2011
More from Urban Dictionary
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

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
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