Top Definition
A person born with a mental condition and therefore has to work a million times harder to be able to do simple things (such as learn and communicate) that we take for granted. On top of this, a retard will usually suffer a lot of ridicule from society because people fear what they do not understand. The people who choose to make fun of the mental retarded tend to be complete morons and cannot comprehend that these people have feelings and emotions just like anyone else.
I find it amusing that saying somebody has cancer would not be taken as a joke and yet, using another disease such as mental retarded as an insult is common among society, and many do not realize that it is very offensive and that there is something seriously wrong about it.
by unknown June 29, 2003

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1 a word used by bullies to label people or be mean there fore the person who called the other person a retard is the real retard
2 a rude synonym for some one with a mental or physical disability often some one who calls people names is a threw retard
1, Joann is so mean that he called Jesse a retard because he lost his pen (that means Joann is a bully)
2, john was obsessed so Joann called him a retard (Joann is a bully)
by john anders March 24, 2007

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To slow something or hinder
A fire blanket is a fire retardant.
by hammertime April 13, 2006

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1.) Someone is abusive toward someone else.

2.) NOT someone who has a mental disability or is born with medically subnormal intelligence. People who fit this description are known as "special," "challenged," or "Earth angel."
That guy who goes around insulting everyone who is different from him is a real retard.

That woman with the mental handicap is an Earth angel. I'm glad I know her.
by somebodyelsealtogether September 25, 2007

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to tard again
Joe tard-ed once, and then once again.

Retard.
by A1steak October 06, 2011

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Someone who takes the Urban Dictionary this seriously:

retard

v. re-TARD
1. (non-transitive) to decelerate.
2. (transitive) to cause a given object to decelerate.

Note: This word is NOT a noun, therefore anyone who descends to the level of naming an unfortunate person with mental disabilities (actually known as a retardee, a subject of mental retardation) a "retard" (with a mysterious emphasis on the first syllable) can be classified as illiterate, and can be ignored as a result. These people should be ignored anyway as they obviously have no sense of decency or sensitivity. This also applies to people who call non-retardees, "retards", implying that to be a "retard" indicates a status worthy of ridicule.
1. At that point the car had, for some reason, begun to retard.
2. At that point the driver had, for some reason, begun to retard his car.

by XXXXXX Jan 11, 2006
"Did you see that retarded definition by that retard on Urban Dictionary?

"I did. What's up with that retard?"

"Probably a retarded virgin who thought this was Webster's"
"Retard. Can you believe anyone voted that definition up?"
"I know, what a bunch of retards."
by ChuckDarwin May 15, 2013

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A retard is a person who does a Scientology course and thinks that it contained valuable information.
Mike thought that that COS management course was really clever - what a retard!
by Bobb The Snob March 21, 2012

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Really
Extra
Totally
Awesome
Rad
Dude
Jill: Hey do you know that guy Nick?

Chris: Sure I know Nick. He's a R.E.T.A.R.D!
by jtizzle554 November 18, 2011

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The Urban Dictionary T-Shirt

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