adj. Function: adjective
1
Synonyms: STUPID 1, beef-witted, blear-witted, dense, doltish, dumb, duncical, numskulled, thick, thick-witted
Antonyms: sharp
2
Synonyms: RETARDED , backward, dim-witted, feebleminded, half-witted, imbecile, moronic, simple, simpleminded, slow
Contrasted Words: advanced, precocious
3
Synonyms: INSENSIBLE 5, anesthetic, bloodless, hard, impassible, insensate, insensitive, rocky
4
Synonyms: DOWNCAST , bad, blue, cast down, dejected, depressed, dispirited, down, downhearted, spiritless
5
Synonyms: COLORLESS 2, drab, flat, lackluster, lifeless, lusterless, prosaic, prosy
Antonyms: bright
6 lacking sharpness of edge or point FF1C; a knife with a dull blade FF1E;
Synonyms: blunt, obtuse
Related Words: blunted, dulled, unsharpened
Contrasted Words: honed, keen, razor-sharp, unblunted, whetted
Antonyms: sharp
7 lacking warmth, luster, or brilliance FF1C; a smooth dull finish FF1E;
Synonyms: blind, dead, dim, flat, lackluster, lusterless, mat, muted
Related Words: cold, dingy, drab, dun, leaden, somber; deadened, lifeless
Contrasted Words: beaming, bright, brilliant, effulgent, fulgent, incandescent, lambent, lucent, lucid, luminous, lustrous, radiant, refulgent; burnished, polished, shiny
8 cloudy in color FF1C; a dull brown FF1E;
Synonyms: drab, muddy, murky, subfusc
Related Words: blurry, cloudy, hazy; flat, lackluster, lifeless, lusterless; mousy
Antonyms: clear; rich
9 being so unvaried or uninteresting as to provoke boredom or tedium FF1C; any routine constantly repeated can become dull FF1E;
Synonyms: banausic, blah, ||dim, dreary, humdrum, monotone, monotonous, pedestrian, plodding, poky, stodgy
Related Words: boring, irksome, tedious, tiring, wearisome; brainless; exhausting, fagging, fatiguing
Contrasted Words: animating, exciting, stimulating; gay, spritely
Antonyms: lively
10
Synonyms: OVERCAST , cloudy, ||dowly, heavy, lowering ( or louring), nubilous, overclouded
11
Synonyms: ARID 2, bromidic, dry, dryasdust, dusty, insipid, tedious, uninteresting, weariful, wearisome
Related Words: matter-of-fact, prosaic, prosy; bloodless
Idioms: dull as ditchwater
Contrasted Words: exciting, stimulating
Antonyms: lively