An "unofficial" (not recognized by dictionaries) slang descriptor for a person/thing/action/object, etc., or a combination of, which is one or more of the following:

a waste of time, abandoned, abject, abominable, abortive, absurd, afraid, aimless, anxious, apprehenaive, arid, arrested, assailable, atomic, awful, baby, babyish, backward, bad, banal, barmy, barren, base, baseless, bastard, beastly, beggarly, behind, beside the question, blah, bland, bogus, bomb, bootless, boyish, brainless, bromidic, bummer, caitiffcapricious, careless, catchpenny, characterless, cheap, checked, cheesy, childish, childlike, clich├ęd, cloying, coarse, colorless, common, commonplace, confusing, contemptible, cotemptible, controvertible, conventional, cool, corn, cornball, corny, corrupt, counterproductive, cowering, cracked, crap, crappy, craven, crazy, crud, cruddy, daffy, daft, dastardly, dazed, dead, deadpan, deficient, degraded, degrading, dejected, delayed, delusive, dense, dense, deplorable, depraved, despicable, destitute, detestable, devoid, diffident, dim, diminutive, dippy, directionless, dirty, disgraceful, dishonest, dishonorable, dismayed, disposable, disreputable, dizzy, dodo, doltish, dopy, dotterel, down, downtrodden, drab, drifting, drudging, dull, dumb, empty, empty-headed, erratic, evanescent, everyday, evildoer, excessive, exhausted, expendable, expressionless, facetious, failed, failing, faint-hearted, fallacious, false, fanciful, fatuous, fawning, featherbrained, feeble, feebleminded, fickle, flaky, flashy, flat, flighty, flimsy, flip, flippant, fool, fool around, foolish, for grins, forlorn, fortuitous, foul, freaked out, freaky, frightened, frivolous, frothy, fruitless, futile, gagged up, garbage, garish, gay, giddy, girlish, glitzy, goalless, good-for-nothing, goofy, green, gross, groundless, groveling, grungy, gullible, gutless, hackneyed, half-baked, half-witted, hang dog, harebrained, heedless, ho hum, hokey, hokum, hollow, hopeless, humble, humbling, humdrum, humiliating, idiotic, idle, ignoble, ignominious, ignorant, ill-advised, ill-considered, illogical, imbecile, immaterial, immature, immobile, immoral, impassive, implausible, impracticable, impractical, improbable, inadequate, inane, inapplicable, inappreciable, incidental, inconceivable, incongruous, inconsequential, inconsiderable, incredible, indelicate, indiscreet, indiscriminate, ineffective, ineffectual, inept, inessential, inexpressive, infamous, infantile, inferior, inglorious, inscrutable, insensate, insignificant, insincere, insipid, insufficient, interminable, inutile, irksome, irrational nonsensical, irrelevant, irresolute, irresponsible, jejune, jittery, joking, joshing, junky, juvenile, kid stuff, kooky, lacking courage, lame, late, laughable, lemon, lifeless, light, light-minded, lily-livered, little, loathsome, loony, loser, lousy, low, low-born, lowly, lowly, low-ranking, ludicrous, mangy, meager, mean, meaningless, measly, mediocre, menial, mentally incompetent, meretricious, microscopic, mindless, minor, minute, indecisive, miscarried, miscreant, miserable, modest, momentary, monkey, monotonous, moronic, moth-eaten, naive, needless, negligible, nervous, niggling, nihil ad rem, no bargain, no dice, no good, no guts, no place, no-account, nonessential, nonsensical, not at issue, not serious, not to the purpose, nothing, nowhere, nugatory, hopeless, nuts, nutty, objectless, obscure, obtuse, odd, off offensive, old hat, old-fashioned, ordinary, otiose, outcast, paltry, panicky, pathetic, pedestrian, peripheral, petty, piddling, pitiable, pitiful, platitudinous, playful, plebeian, pointless, poker-faced, poor, potty, pre-kindergarten, preposterous, primitive, profitless, proletarian, prosaic, puerile, puny, purposeless, pusillanimous, random, rash, ratty, raunchy, recreant, removable, repetitious, result less, retiring, rinky-dink, rotten, rough, routine, rubbishy, run scared, sappy, scandalous, scanty, scared, scatterbrained, screwy, scrubby, scurvy, second-rate, seemly, senseless, sentimental, servile, severe, shabby, shallow, shameful, shiftless, shoddy, shopworn, shrinking, shtick, shy, silly, simple, simple-minded, skin-deep, sleazy, slight, slimy, slow, sluggish, small, small time, soft, sordid, sorry, sorry lot, spineless, sportive, squalid, square, stale, stale, stark, stereotyped, sterile, stiff, stock, stodgy, stolid, stray, stuffy, stupefied, stupid, submissive, subnormal, superficial, superfluous, tame, tatty, tawdry, tedious, terrible, the subject, the willies, thick, thickheaded, thin, thoughtless, threadbare, timid, timorous, tired, tiresome, tiring, tomfool, tongue-in-cheek, transparent, trashy, trifling, tripe, trite, trivial, trumpery, ugly, unassuming, unavailing, unbelievable, uncommunicative, unconvincing, uncouth, underdeveloped, underfoot, underprivileged, undevelopedundirected, undistinguished, unessential, unexciting, unexpressive, unfit, ungrounded, unguided, unimaginative, unimportant, unintelligent, unmanly, unnecessary, unneeded, unoriginal, unpersuasive, unplanned, unpredictable, unpretentious, unproductive, unprofitable, unreal, unreasonable, unrefined, unrelated, unsatisfactory, unsophisticated, noncommital, unsubstantial, unsuccessful, unthinking, unusable, unvaried, unworthy, uselessvacant, vacuous, vagrant, vaguevain, valueless, vanishing, vapid, vile, plebeian, volatile, vulgar, wackywandering, wanton, waste, watery, wayward, weak, wearisome, well-worn, whimsical, white elephant, wide of the mark, wide of the point, wishful, wishy-washy, witless, worthless, wretched, or yucky.
There are literally a thousand different uses for the slang version of "retarded" - (Quick note:) Usage-wise, it came before and set the precedence of the way we use "gay" in slang today - used correctly, they're practically interchangable.

"That test was really gay!"
"Oh yeah, our chemistry teacher is being retarded."

"Mary, stop being retarded! You're so gay, grow up!"

"I thought it was a simple babysitting job, but I was wrong. Besides all the other stuff, I had to clean up after the retard, which was pretty retarded. To top it off, he set the carpet on fire, which I had to put out with the flame-retardent extinguisher. And after all of that, the parents only paid me $15. Babysitting is gay."
by TBB August 05, 2005

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A gifted person that is often unappreciated <3
Look at that retarded guy.... Really? Where? All I see is a gifted person created by God
by isaybrahhh July 31, 2011

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the top definition of this word on this site. (see above)
The person who made that ridiculous list must be retarded.
by hallucinog3n March 27, 2010

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(1) Generally a mentally handicapped person, with an IQ rating of below 80. As such used a general insult of intelligence. This can also be used with brief mental impairment resulting from alcohol or drugs.

(2) A female who induces stupification in all males who gaze upon her.

(3) Anything excepional, fantastic, or otherwise so good that it causes a brief period of mental impairment in the participant. e.g.
(1) "Retards ride the short bus, but they seem to like it."
"I got retarded at that party, a bottle of tequila, pot brownies, and a ball of coke!"
"I was roofie-grade retarded after eating all those Valiums last night."
(2) "Did you see that girl? She was so retarded I was drooling on myself!"
"She's too retarded for me, I swear I'd be speaking like a caveman if I managed to get close enough to talk to her."

(3) "His new car is retarded, I'm so jealous."
"That concert was retarded. I couldn't believe my ears."
by -=KrZ=- June 01, 2003

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A person of average intelligence whose actions personify a mental deficiency
Sue is so retarded for dating that loser.

Don't be retarded, of course the team will suck this year!
by BaileyMac March 13, 2010

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to be utterly stupid like no tomorrow
e.g.
Retard #1 Helmon: "sup cuz hows the car?"

Retard #2 Nadal: "its ok bra i parked it in and added headlights"

Retard #3 Haydur: "So where did u park the trolley?"

Cool Asian Guy: "Fucking retarded lebs"
by Nadal the Retard September 15, 2010

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An adjective that may describe something that seems significantly unfair, disbalancing, or otherwise unreasonable, often resulting in frustration from those who have to deal with it, and joy for those in whose favor it works. Often associated with games, or particular aspects of games.
"Argh, this boss is retarded! He is, like, impossible to beat!"

"Man, don't play with Kevin. He always uses a retarded army list, and will have you beaten in like two turns."

"...and just when it seemed like I was going to get my ass handed to me, I popped out an absolutely retarded number of marines and pushed him all the way back to his base."
by Icebreed September 01, 2008

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Something or someone that is considered slow. This can be slow-minded or slow-moving. It is also something that is used as a slang term when describing a person or a thing that is considered silly or foolish.
My teacher told me that I need to do my homework on Saturday night, that is so retarded!

Michael is handicapped and it makes him a little slow, but if you call him retarded he'll run after you with a giant stick and make you take it back!
by CutiefromKilleen December 17, 2007

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