Skip to main content
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.
Leonhard Euler was one of top mathematicians of the eighteenth century and the greatest mathematician to come out of Switzerland. He made numerous contributions to almost every mathematics field and was the most prolific mathematics writer of all time. It was said that "Euler calculated without apparent effort, as men breathe...." He was dubbed "Analysis Incarnate" by his peers for his incredible ability.
That Euler is one bad mofo.
Euler by Tom Jones February 3, 2004
Related Words
Euller • ellery • Eller • ellerie • Ellera • Euler • Euclerald • ellerick • ellern • ellernate

Kenneth Ellerbe 

The current Washington DC Fire Chief who is widely known for changing the name of the department (DCFEMS) and funding uniform changes while not paying people their salaries. This man has social-agenda's and is in control of a 2,000 person work force while not showing any regard for his employee's. He is also known as a Dictator
You better not manage your company like Kenneth Ellerbe, or you'll have some pissed off employee's!
Kenneth Ellerbe by DC News Guy October 16, 2011

ellervana 

A constant urge to shop at urban outfitters

Does not like coffee but likes to talk to shy guys who make coffee

Solar Eclipse
You seem so ellervana right now.
ellervana by RadisRad.. May 9, 2010

Zig eller bliv zigget 

"Zig eller bliv zigget" is a phrase that is mainly used by a certaint group of people
The phrase means in english "Steal or get stolen", to make it fun it has to be said and understood in Danish
Zig eller bliv zigget, det er min telefon nu!
Zig eller bliv zigget by MikkelYT10 September 17, 2022

Euler's Toilet 

The state of being in the middle of so much math that it turns to shit.
"I'm working on some newton fractals... and now I'm totally in Euler's Toilet"
Euler's Toilet by orethx December 9, 2008
Highest degree of prestige. Of prime; cannot be exceeded or surpassed. More important than anything else; supreme or absolute.
The guidelines were ellergy in order to ensure that high standards were maintained.
Ellergy by Ellergy April 22, 2014
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
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
Load more