boredom tedium dreariness weariness dullness tediousness flatness sameness ennui blandness routine doldrums monotony listlessness apathy indifference restlessness blahs malaise lethargy lassitude sluggishness deadliness uniformity languor unconcern frustration yawn detachment repetitiveness dissatisfaction incuriosity humdrum fatigue disinterest restiveness irksomeness disgust distaste jadedness dryness wearisomeness invariability similarity evenness monotone uneventfulness levelness likeness unchangeableness continuance equability colorlessness continuity identicalness oneness slowness humdrumness prolixity colourlessness banality lifelessness repetition aridity jejuneness insipidity ponderousness laboriousness drabness vapidity deadness endlessness predictability drudgery vapidness staleness familiarity commonplaceness sterility stodginess asepticism innocuousness wateriness tastelessness impassivity dispassion nonchalance unresponsiveness dispassionateness phlegm disregard incuriousness insouciance impassibility heedlessness boringness spiritlessness feebleness weakness inanity