Synonyms for Dullness:

n.

lassitude, languidness, torpidity, hebetude. sterility, jejuneness, stodginess, insipidness, weariness, blandness, asepticism, excite, vapidness, sterileness, flavorlessness. bluntness (noun)
pointlessness.
boredom (noun)
apathy, monotony, indifference, listlessness, dreariness, ennui, tedium, boredom.
cognition (noun)
obtuseness.
colorlessness (noun)
neutrality, colorlessness, whiteness, paleness, fadedness, tonelessness.
depression (noun)
gloominess.
dimness (noun)
paleness.
dullness (noun)
dimness, obtuseness, drowsiness, dulness, denseness, ponderousness, stupefaction, boorishness, sleepiness, thick-wittedness, sluggishness, slowness, benumbedness, cloddishness, stupidness, lethargy, doltishness, bluntness.
fatigue (noun)
faintness.
grayness (noun)
gloominess, somberness, dull, gray, ashiness, iron-grayness, mousiness, Smokiness, Silveriness, pearliness, drabness, grayness, leadenness, dapple-grayness, dinginess.
inertia (noun)
deadness, drowsiness.
insensibility (noun)
trance, unconsciousness, insensibility, insentience, narcosis, faintness, callousness, obliviousness, oblivion, Sopor, senselessness, insensitivity, stupor, aloofness, coma, unfeelingness, deadness, numbness, swoon, anesthesia.
lethargy (noun)
languor, laziness, torpor, lifelessness, tiredness, passivity, idleness, slothfulness, indolence.
non-resonance (noun)
muteness, non-resonance, silence, flatness.
numbness (noun)
daze, desensitization.
quality of being boring (noun)
dryness, insipidness, dreariness, flatness, sameness, tediousness, vapidity, routine, lifelessness, Familiarity, drabness, insipidity, tedium, slowness, boredom.
stupidity (noun)
stupidity, stupidness, insensibility.
tastelessness (noun)
flavorlessness.

Other synonyms:

hebetude, sterileness, asepticism, stodginess, vapidness, torpidity, blandness, vapidity, flavorlessness. insipidity, jejuneness, languidness, depression, insipidness. dryness. sterility. languor
lassitude.
tedium
tediousness.
tiredness
weariness.

Usage examples for dullness

  1. It seemed to the two that they were treading the paths of a larger design than they could imagine; and Skag was sure it was only the dullness of his faculty and the slowness of his taking, not Carlin's resources of magic, that limited the joy. – Son of Power by Will Levington Comfort and Zamin Ki Dost
  2. If you only knew as well as I do the terrible, never- ending dullness of this place, you would understand how one could long for the coming of any one. – Molly Bawn by Margaret Wolfe Hamilton
  3. From this time he addicted himself to attend more carefully to religious discourses than most of the rest, and as far as the amazing dullness of his intellects would give him leave, applied to the duties of his sad state. – Lives Of The Most Remarkable Criminals Who have been Condemned and Executed for Murder, the Highway, Housebreaking, Street Robberies, Coining or other offences by Arthur L. Hayward