A person who deprives everyone of their joy in the moment, sometimes resulting in silence.
When Bob walked in, and then everybody's expression changed and everyone stopped talking, Bob is a real killjoy
by Chieftawsmcool January 17, 2011
someone who kills joy.
isn't that obvious.
by calV April 30, 2005
People who are douche bags and have to ruin the fun of everything, kill the mood or shoot everything down.
Jamie: "Naw, I think I'm going to skip out on the concert, chillin' with friends and going camping."
Caitlin: "Jamie you're such a fuckin' kill joy!"
by Caitlin July 01, 2005
Peepz who kill the fun by wanting to do something else or calling it a day/night too early (like me).
"Ay I gotta go. I gottta see my friend so...just watch the rest of GLADIATOR without me, aightz?"

"You're such a KILL JOY!"
by Joshiro007 February 24, 2003
One who does not conform to society or corporations; Rebel
"The future is bulletproof
The aftermath is secondary
It's time to do it now and do it loud
Make some noise"
by Killjoys March July 14, 2014
People who consider themselves fans of My Chemical Romance. It's a relatively new term, emerging after the release of their fourth album, Dander Days: True lives of the fabulous Killjoys. Killjoys are often rebellious, and express their rebellion through music, art, or literature. As such, they're somewhat well-know for being artistically gifted in those and other areas. Sometimes, a killjoy will give him/herself a "killjoy name," which is usually an exciting, unique adjective followed by an equally exotic noun.
Killjoys, make some noise!
by Sykoh July 07, 2011
Rebels of BLI (Better Living Inc.) in California 2019 from My Chem 's album Danger Days: The True Lives Of The Fabulous Killjoys.
It's time to do it now and do it loud. Killjoys, make some noise!
by KILLJOYSmakeSOMEnoise March 30, 2011
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