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1.
A mixture of "cunt" and "retarded". most likely to be said at someone who's acting whorrishly stupid.
*at a party*

Brittney spears: whooo i'm sooo drunk i think I'll sleep with Justin Timberlake.

Justin Timberlake: Damnit britney stop acting cuntarded you look like a fool.
by yermoom December 13, 2009
 
2.
(Cun•tar•did)

1. When you are so much of an ugly, retarded whore, that someone must describe you as all three in this one simple word.

2. When you are a girl with a Vagina that is bacteria infected, STI infected, or just gross looking. Then that cunt would be retarded. Hence: Cuntarded.
Example for Definition 1;

Spencer: I saw a girl that was a whore, and she was slow too!
Ashton: Was it Lauren? I head she was really cuntarded.

Example for Definition 2;

Britney: I saw that girl in the shower last night, and her vagina was so disgusting. It had pimples, and smelled like shit.
Lauren: Man, that must have been one cuntarded vagina.
by JustMe2904514216 December 11, 2011