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.

killarious 

I nearly pissed myself laughing when I watched Superbad. It was absolutely killarious!
killarious by Linhwin March 1, 2009

killarious 

something so funny, that you could die from it.
shit dude, when you blew up ur trailer, that was killarious!!
killarious by bleh December 29, 2004

Killarious 

Something so humourous that laughing becomes a danger to your life.

Signs of this may include severe choking due to lack of ability to breathe and rolling on the floor in an uncontrollable manner.
It was so killarious that he nearly suffocated!
Killarious by zktsuki April 19, 2010

illarious 

Ill + Hilarious = Illarious
Did you hear that one about The Aristocrats? That joke was ILLARIOUS!
illarious by aliastx February 19, 2011

Hillarious 

to be as funny or pleasing or to have high degree of humor as Hillary.

Early 21st century Native American: from Vietnam mixed German background ( from Greek hilaros 'cheerful' ) + ous. The sense ' exceedingly amusing ' dates from 2019.
Me: You're so Hillarious
Hillary: Haha that is so punny of you! ;)
Hillarious by Cyronious October 1, 2019

Sillarious 

when something is silly and hilarious at the same time and you can't make up your mind on which word you want to say, this word is most likely to naturally come out of your mouth.
Tim: “You must like getting spanked Farley, I guess it runs in the family.”

Jillian: "ha! that was sillarious!

Kid: "SHUT UP!...SHUT UP!"
Sillarious by Tinbug January 5, 2010
More from Urban Dictionary

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
Load more