Synonyms for Dull:
rounded, unpointed, pointless, obtuse, edgeless, unsharpened, blunt.
insipid, tedious, dry, mundane, dreary, prosaic, tiresome, well-worn, depressing, monotonous, humdrum, boring, uninteresting, commonplace, Weariful, wearisome.
•boring, uninteresting (adjective)
dismal, plain, unimaginative, worn-out, insipid, pointless, uninspiring, commonplace, arid, ordinary, common, abused, soporific, archaic, humdrum, out-of-date, stale, hackneyed, tired, hoary, tiresome, repetitious, Familiar, trite, dreary, stock, prolix, vapid, repetitive, prosy, dry.
colorless, bleached, lusterless, achromatic, hueless, lackluster, neutral, toneless, faded, pale, white.
dysphoric, spiritless, heavy-hearted, tristful, melancholic.
•drab, lackluster in effect on senses (adjective)
dark, soft, somber, sober, obscure, leaden, dusky, muddy, opaque, grimy, dingy, blind, faded, dun, softened, cloudy, muted, muffled, matte, ashen, mousy, sooty, murky.
besotted, thick-witted, soporific, sluggish, sleepy, dim, bovine, lethargic, slow, dense, blunt, backward, cloddish, boorish, comatose, benumbed, ponderous, loutish, doltish, apathetic, drowsy, stupefied, obtuse.
drab, neutral-tint, salt-and-pepper, mole-gray, gun metal, mousy, gray, smoky, lead-gray, iron-gray, dreary, dapple-gray, grizzled, gloomy, pearl-gray, dingy, battleship-gray, somber, pearly, ashen, silvery, leaden, taupe.
depressed, insensible, lifeless, spiritless, placid, usual, apathetic, listless, regular, languid, quiet, lumpy, inactive, monotonous, stagnant, jejune, torpid, colorless, dead, routine, unresponsive, flat, prosaic, still, accustomed, callous, unexciting, even, heavy.
languid, lackadaisical, indolent, leisurely, languorous, lifeless, drooping, phlegmatic, apathetic, unhurried, dopey, drugged, lumpish, lethargic, lazy, tired, torpid, insensible, slow, slothful, sluggish, benumbed, leaden, listless.
muffled, Damped, dead, deadened, flat, silenced, mute, non-resonant.
•not sharp (adjective)
blunted, square, unpointed, unsharpened, blunt, round, edgeless, turned.
deadened, insensitive, stupefied, desensitized, anesthetized, numb, dazed, narcotized, drugged.
unperceptive, senseless, soporific, dead, narcotic, insentient, trance-like, callous, swooning, aloof, insensible, oblivious, numb, unfeeling, faint, blacked out, insensitive, comatose, unconscious, anesthetized.
brainless, imbecilic, indolent, boring, dim, besotted, stolid, low, doltish, dense, backward, shallow, vacuous, simple-minded, tedious, insensate, witless, simple, ignorant, addled, obtuse, sluggish, slow, scatterbrained, dumb, moronic, Feeble-minded, wearisome.
n.bad, chronic, agonizing, burning, square, chapped, crippling, turned, agonising, broken, angry, achy, round, acute, used, sharp. decide, influence, sordid, lead to, grave, inky, stir, dark, color, grimy, colorful, bright, pitchy, catch, give, grip, plain, dun, skew, dusky, sober, obscure, pack a punch, sooty, dirty, rusty, muddy, wan, opaque, murky, dismal. backward, quick, unexciting, ignorant, witless, simple, scatterbrained, prosy, stodgy, unimaginative, spiritless, non compos mentis, fatuous, witty, slow-witted, stuffy, unintelligent, blockheaded, trivial, brainless, insensate, dimwitted, Feeble-minded, stolid, vacuous, unresponsive, simple-minded, moronic, addled, shallow, wooden, half-witted, imbecilic. trite, bland, stock, out-of-date, Familiar, hoary, jejune, Fatiguing, ancient, well-worn, abused, stereotypical, exciting, common, pedestrian, repetitive, silly, routine, unvarying, deadly, stale, well-known, stereotyped, worn-out, hackneyed, uninspiring, antediluvian, ordinary, old, platitudinous, banal, barren, archaic, vapid, wearying, idiotic, wearing, repetitious, tiring, fascinating, prolix, usual, conventional. billow, cumulus, cirrocumulus, column, cloud, bank, cirrus, cirrostratus, low, cumulonimbus. uneventful, razor-sharp, regular, double-edged, lumpy, lively, razor-edged, barbed, serrated, accustomed, keen, poky, placid, stimulating, even, Two-edged, left-handed, depressed, stagnant, active. bass, low-pitched, resonant, Weak-minded, ability, hollow, deep, plangent. stuporous, nonprofit, unprofitable, awareness, uneconomical, unhealthy, untapped, not-for-profit, uneconomic, loss-making, underfunded. block out, drown, blind, cut out, uncomprehending, quieten, see. anesthetic, bloodless, feelings, weak, attitude. down, off, increase. drear, Weariful, excite. earthbound, aseptic, uninspired, sterile, flavorless, matter of fact. colors. light. •dull (noun)
deadening, muffled, lusterless, dreary, muffle, mute, desiccate, nonresonant, grey, slow, boring, heavy, leaden, unsharpened, dim, dumb, lackluster, matt, damp, lustreless, matte, arid, dense, bovine, humdrum, obtuse, wearisome, inactive, thudding, gray, edgeless, tone down, blunted, dampen, mat, monotonous, muted, benumb, thumping, insensitive, ho-hum, blunt, dulled, unreverberant, Irksome, numb, pall, softened, sluggish, cloudy, drab, matted, deadened, tedious, unsaturated, lacklustre, desiccated, soft, uninteresting, flat, tiresome.
dreariness, drabness, Silveriness, mousiness, grayness, dapple-grayness, dinginess, pearliness, gloominess, dullness, Smokiness, leadenness, somberness, ashiness, iron-grayness.
•in low spirits (noun)
tristful, melancholic, depressed, dispirited, happy, spiritless, low, wistful, dysphoric, unhappy, blue, downcast, heavy-hearted, sad, down, melancholy, downhearted, dejected, desolate.
bore, fatigue, annoy, weary, tranquilize, sedate, tire.
cripple, hobble, stupefy, vitiate, hamstring, impair, tamper, cramp, benumb, handicap, botch, abrogate, paralyze, anesthetize, hamper, hinder, prostrate, disarm, scotch, enfeeble, screw up, lame, weaken, stun, deaden, sap, incapacitate, undermine, neutralize, invalidate, disable.
daze, desensitize, narcotize, drug.
muffle, silence, still, turn down, quiet.
low-pitched, trivial, drear, slow-witted, razor-edged, loss-making, plangent, banal, serrated, stuporous, muddy, unexciting, uneconomic, uneconomical, unprofitable, uncomprehending, unresponsive, underfunded, Weariful, resonant, quieten, idiotic, opaque, sharp, aseptic. deadly, barbed, left-handed, matter of fact, half-witted, shallow, anesthetic, Two-edged, earthbound, double-edged, ordinary, uninspired, hollow, pedestrian, stale. flavorless, insensate, barren, Weak-minded, wan, razor-sharp, unhealthy. cloud, drown, bloodless, wooden, weak, murky, sterile. bass. off. blind. •barren
•in low spirits
melancholy, downcast, unhappy, depressed, dejected, spiritless, blue, dispirited, melancholic, down, tristful, wistful, heavy-hearted, low, sad, desolate, dysphoric, downhearted.
•Other relevant words:
wooden, tone down, stolid, dun, dampen, mat, slow-witted, damp, unimaginative, heavy, unintelligent, drown.