duller

noun 0.734

dullard

noun 0.675

dourness

noun 0.667

dimness

noun 0.664

dumbness

noun 0.624

drabness

noun 0.616

dreariness

noun 0.613

dismalness

noun 0.602

deadness

noun 0.598

direness

noun 0.596

boringness

noun 0.595

duskiness

noun 0.593

obtuseness

noun 0.587

humdrum

noun 0.578

dinginess

noun 0.574

deadening

noun 0.566

lackluster

noun 0.564

drowsiness

noun 0.564

heaviness

noun 0.556

boring

noun 0.554

hollowness

noun 0.553

glumness

noun 0.553

thudding

noun 0.544

sluggishness

noun 0.543

muddiness

noun 0.540

boredom

noun 0.540

damping

noun 0.539

blandness

noun 0.539

somberness

noun 0.534

mundaneness

noun 0.533

gloominess

noun 0.532

muffling

noun 0.532

tympany

noun 0.531

dampness

noun 0.530

dryness

noun 0.529

lowness

noun 0.528

lull

noun 0.528

stolidity

noun 0.527

bluntness

noun 0.526

dum dum

noun 0.526

somnolence

noun 0.525

blunting

noun 0.525

tediousness

noun 0.525

dusky

noun 0.522

plainness

noun 0.522

darkness

noun 0.520

dumdum

noun 0.520

sullenness

noun 0.519

tiredness

noun 0.518

blankness

noun 0.518

denseness

noun 0.517

numbness

noun 0.516

tedium

noun 0.514

vapidity

noun 0.514

drab

noun 0.513

dustiness

noun 0.512

insipidity

noun 0.512

deafness

noun 0.512

ennui

noun 0.511

bleakness

noun 0.510

monotony

noun 0.509

damp

noun 0.509

mellowness

noun 0.509

gloom

noun 0.508

dowdiness

noun 0.507

slowness

noun 0.507

drowse

noun 0.507

eeriness

noun 0.507

loudness

noun 0.506

thud

noun 0.506

lumpiness

noun 0.506

opaqueness

noun 0.505

sleepiness

noun 0.505

dimpling

noun 0.505

languor

noun 0.503

dunt

noun 0.503

stuffiness

noun 0.503

murkiness

noun 0.503

flatness

noun 0.502