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adjective
unintelligent
Synonyms: addled, backward, besotted, boring, brainless, daffy, daft, dense, dim, dim-witted, doltish, dumb, feeble-minded, half-baked, ignorant, imbecilic, indolent, insensate, low, moronic, not bright, numskulled, obtuse, scatterbrained, shallow, simple, simple-minded, slow, sluggish, stolid, stupid, tedious, thick, unintellectual, vacuous, wearisome, witless
Antonyms: intelligent, keen, sharp, smart, witty
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adjective
insensitive
Synonyms: accustomed, apathetic, blank, boring, callous, colorless, dead, depressed, empty, even, flat, heavy, impassible, inactive, indifferent, inert, insensible, jejune, languid, lifeless, listless, lumpy, monotonous, passionless, placid, prosaic, quiet, regular, routine, slack, slow, sluggish, spiritless, stagnant, still, stolid, torpid, unexciting, unresponsive, unsympathetic, usual, vacuous
Antonyms: lively, quick, sensitive, vivacious
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adjective
boring, uninteresting
Synonyms: abused, archaic, arid, big yawn, blah, colorless, common, commonplace, dead, dismal, dreary, driveling, dry, familiar, flat, hackneyed, heavy, hoary, ho hum, humdrum, insipid, jejune, longwinded, monotonous, oft-repeated, ordinary, out-of-date, plain, pointless, prolix, prosaic, prosy, repetitious, repetitive, routine, run-of-the-mill, soporific, stale, stock, stupid, tame, tedious, tired, tiresome, trite, unimaginative, uninspiring, usual, usual thing, vapid, worn-out
Antonyms: active, exciting, interesting, lively
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adjective
not sharp
Synonyms: blunt, blunted, edentate, edgeless, flat, not keen, obtuse, pointless, round, square, toothless, turned, unpointed, unsharpened
Antonyms: knifelike, pointed, serrated, sharp
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adjective
uneventful
Synonyms: accustomed, apathetic, blah, boring, dead, depressed, draggy, even, falling off, flat, inactive, inert, languid, lifeless, listless, monotonous, placid, quiet, regular, routine, sitting tight, slack, slothful, slow, sluggish, stagnant, still, stolid, tight, torpid, unexciting, unresponsive, usual, without incident, yawn
Antonyms: active, eventful, exciting, interesting, lively
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adjective
drab, lackluster in effect on senses
Synonyms: ashen, black, blind, cloudy, cold, colorless, dark, dead, dim, dingy, dismal, dun, dusky, faded, feeble, flat, grimy, hazy, indistinct, leaden, lifeless, low, matte, mousy, muddy, muffled, murky, muted, obscure, opaque, overcast, plain, shadowy, sober, soft, softened, somber, sooty, subdued, subfusc, toned-down, unlit
Antonyms: bright, clear, light, luminous, lustrous