look up any word, like hipster:
 
15.
A dumbass who gives thumbs down on a perfectly good Urban Dictionary definition. Most downers can be found on the main page where the word of the day is located. And there are quite a few of them.
What the hell?! I got 500 thumbs up and 2000 thumbs down! Buncha fuckin' downers!
by TheSaltyWhore February 19, 2011
 
16.
rehabilitating druggie
a smack head who is currently off it ie a downer
by jjjjji September 28, 2010
 
17.
An idiotic person that won't stop their annoying ways in public, and just does stupid things (trying to be funny, and trying to fit in, but really.....there's no hope for them).
"Seriously, would you stop being such a downer, and get you head back in the window."
by Whitney J May 23, 2005
 
18.
a person place or thing that has down syndrome or looks acts or dances like a retard.
usually lacking their full 46 chromosomes.
Often used by Marina and Laura
"look a Fred, hes such a downer"
by C-Downer-Breezy May 29, 2009
 
19.
Noun: Someone or something, typically a girl who ruins the mood or atmosphere. Often this behavior will tempt acquaintances to kill themselves or others.
Jessi from saved by the bell was, is, and always will be a downer, except in Showgirls.
by Tod Higgins August 14, 2005
 
20.
Spastic, retard, some one being stupid for no reason and its not funny!
kelly was beeing all stupid and shit, shes such a Downer!!!
by what ever u want it to be September 07, 2005
 
21.
Somebody with down syndrome.
'Man, look at that guy, he's a massive downer!'
by 1128 June 11, 2007