Dull

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

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

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dry familiar flat hackneyed heavy hoary ho hum humdrum insipid jejune longwinded monotonous oft-repeated ordinary out-of-date plain pointless prolix prosaic prosy repetitious repetitive routine run-of-the-mill soporific stale stock stupid tame tedious tired tiresome trite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

blunt blunted edentate edgeless flat not keen obtuse pointless round square toothless turned unpointed unsharpened

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