[1] : The Collaborative International Dictionary of English v.0.48

stupid \stu"pid\, a. l. stupidus, fr. stupere to be stupefied:
   cf. f. stupide.
   1. very dull; insensible; senseless; wanting in
      understanding; heavy; sluggish; in a state of stupor; --
      said of persons.
      1913 webster

            o that men . . . should be so stupid grown . . .
            as to forsake the living god         --milton.
      1913 webster

            with wild surprise,
            a moment stupid, motionless he stood. --thomson.
      1913 webster

   2. resulting from, or evincing, stupidity; formed without
      skill or genius; dull; heavy; -- said of things.
      1913 webster

            observe what loads of stupid rhymes
            oppress us in corrupted times.        --swift.
      1913 webster

   syn: simple; insensible; sluggish; senseless; doltish;
        sottish; dull; heavy; clodpated. -- stu"pidly, adv.
        -- stu"pidness, n.
        1913 webster
see also:
stu"pidly stu"pidness 

[2] : WordNet (r) 2.0

stupid
     adj 1: lacking or marked by lack of intellectual acuity ant: smart
     2: in a state of mental numbness especially as resulting from
        shock; "he had a dazed expression on his face"; "lay
        semiconscious, stunned or stupefied by the blow"; "was
        stupid from fatigue" syn: dazed, stunned, stupefied,
         stupidp
     3: without much intelligence; "a dull job with lazy and
        unintelligent co-workers" syn: unintelligent ant: intelligent
     n : a person who is not very bright; "the economy, stupid"
         syn: stupid person, dullard, dolt, pudding head,
          pudden-head, poor fish, pillock
see also:
smart dazed stunned stupefied stupidp unintelligent 
intelligent stupid person dullard dolt pudding head 
pudden-head poor fish pillock 

[3] : Moby Thesaurus II by Grady Ward, 1.0

179 moby thesaurus words for "stupid":
   boeotian, absurd, addled, apish, asinine, backward, balmy, barmy,
   batty, beef-brained, beef-witted, beetleheaded, befooled, beguiled,
   besotted, blear-eyed, blear-witted, block, blockheaded, blockish,
   boneheaded, bootless, boring, bovine, brainless, brute, brutish,
   buffoonish, chuckleheaded, chumpish, clod, cloddish, cockamamie,
   cockeyed, cowish, crass, crazy, credulous, cretinous, cuckoo,
   daffy, daft, dazed, dense, dim, dim-witted, dimwit, dizzy, dolt,
   doltish, donkey, dope, dopey, doting, dozy, dull, dull-witted,
   dullard, dullhead, dumb, dumb cluck, dumbbell, dummkopf, dummy,
   dunce, duncical, duncish, empty-headed, fat, fatheaded, fatuitous,
   fatuous, flaky, fond, fool, foolhardy, foolheaded, foolish,
   frivolous, fuddled, futile, gaga, goofy, goosey, gowk, gross,
   gulled, half-assed, half-baked, half-witted, ho-hum, humdrum,
   idiot, idiotic, ignoramus, ill-advised, imbecile, imbecilic, inane,
   ineducable, inept, infatuated, insane, insipid, irrational,
   irresponsible, jerky, jobbernowl, klutzy, kooky, lackwit,
   lamebrain, laughable, lightweight, looby, loon, loony, ludicrous,
   lumbering, lumpish, mad, maudlin, mindless, monotonous, moron,
   moronic, niais, nincompoop, ninny, ninnyhammer, nitwit, noddy,
   nonsensical, numskulled, nutty, oafish, obtuse, opaque, pinhead,
   prosaic, put, retarded, ridiculous, risible, sappy, scatterbrained,
   screwy, senseless, sentimental, silly, simple, simpleton, slow,
   slow-witted, sluggish, sottish, stolid, subnormal, tedious, thick,
   thick-witted, thickheaded, thickwit, thoughtless, tiresome, torpid,
   unimaginative, uninspired, unintelligent, uninteresting,
   unteachable, vacuous, vapid, wacky, weak-minded, wet, witless,
   witling, wrongheaded

Stupid >> S Words
Stupid, definition of term: Stupid
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