dullness Synonyms - page 4

achromaticity impassibility oscitancy monotony monotone milkiness matte limpness lethargy lentor lenitude laziness lassitude morbidity muckiness opaqueness opacity obscureness obliquity numbness narcosis muteness murkiness mundanity muddiness languor insouciance insipidness inarticulation inarticulateness inappetency inanimation inanimateness inactivity inaccessibility imperception impenetrableness impassivity incomprehensibility incuriosity insipidity insensibleness insensibility infertility infecundity inertness inertion inertia indolence indifference