Dull

Synonyms Uninteresting, tedious, wearisome, dry as dust, bland, featureless, monotonous, uninspiring, lacking variety, lacking excitement, unimaginative, lifeless, insipid, derivative, prosaic, humdrum, banal, ponderous, dull as dishwater, no great shakes, dreich, ornery, boring, tiresome, dry, flat, characterless, colourless, unexciting, unstimulating, lacking variation, lacking interest, uneventful, soulless, unoriginal, commonplace, run-of-the-mill, unremarkable, plodding, pedestrian, deadly, not up to much, and dullsville.

Synonyms Drab, sombre, subdued, toned down, lustreless, faded, muddy, pale, dreary, dark, muted, lacklustre, colourless, washed out, watery, and subfusc.

Synonyms Overcast, gloomy, dim, dreary, sombre, leaden, sunless, subfusc, cloudy, dark, dismal, bleak, grey, murky, and louring.

Synonyms Muffled, quiet, softened, indistinct, smothered, muted, soft, faint, stifled, and suppressed.

Synonyms Blunt, not sharp, unsharpened, edgeless, blunted, unkeen, dulled, and worn down.

Synonyms Slack, flat, slow-moving, inactive, stagnant, lethargic, unenergetic, languid, inert, somnolent, weary, fatigued, apathetic, dopey, logy, neurasthenic, sluggish, slow, quiet, static, depressed, enervated, listless, torpid, sleepy, drowsy, tired, heavy, dozy, yawny, asthenic, and lymphatic.

Synonyms Unintelligent, slow, slow-witted, doltish, stolid, empty-headed, mindless, half-witted, moronic, cretinous, dense, dim-witted, dumb, dozy, pig-ignorant, slow on the uptake, brain-dead, chuckleheaded, wooden-headed, muttonheaded, not the full shilling, stupid, dull-witted, witless, dunce-like, vacuous, brainless, foolish, idiotic, imbecilic, obtuse, dim, thick, dopey, lamebrained, bovine, soft in the head, boneheaded, dunderheaded, fat-headed, daft, and thick as two short planks.

Synonyms Lessen, diminish, dampen, take the edge off, deaden, soften, allay, soothe, alleviate, moderate, numb, desensitize, stupefy, stun, sedate, narcotize, obtund, pale, wash out, decolour, etiolate, blacken, veil, shadow, bedim, cast a pall over, lower, shake, suppress, smother, decrease, reduce, depress, blunt, mute, tone down, ease, assuage, palliate, mitigate, benumb, render insensitive, daze, drug, tranquillize, torpefy, fade, bleach, decolorize, dim, darken, blur, obscure, fog, put a damper on, cast down, crush, sap, extinguish, and stifle.