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16.
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
 
8.
Some-one with down syndrome or a stupid person
"That guy is an idiot he gets on like a downer"

Person 1:"Down syndrome people are so cute"

Person 2:Down syndrome people? I just call them downers
by rhomsy February 01, 2011
 
9.
a saggy dick that hangs down .
Lucy was looking at that guy and he got a downer .
by dangvickii July 27, 2009
 
10.
a boner that points downward because a guy's pants are too tightjeans,short etc..
me: OMG when all the girls were hugging eachother, gabriel got a boner.
victoria: well he's wearing jeans; i guess its a downer.
me: wurrdd.
by lalalalucyy July 27, 2009
 
11.
Someone with down syndrome.
Man, look at that downer drooling everywhere.
by oioOo.o March 08, 2009
 
12.
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
 
13.
rehabilitating druggie
a smack head who is currently off it ie a downer
by jjjjji September 28, 2010
 
14.
A word often used to describe someone suffering from the dessiese "down syndrome"/ People often use this word to describe other when they perform stupid acts, or make fools of themselves
"check out this guy, he is a bit of a downer"
"dam that rahoul kid is a downer"
by matt April 09, 2005