flatness blandness dreariness vapidity drabness lifelessness staleness sterility weariness tediousness tedium aridity boredom colorlessness commonplaceness dryness familiarity routine sameness slowness vapidness stodginess insipidity jejuneness asepticism dullness innocuousness wateriness banality pointlessness tameness mildness gentility tastelessness triteness colourlessness monotony tiresomeness wearisomeness uniformity ennui boringness deadliness repetitiveness humdrum invariability similarity evenness monotone equability identicalness levelness likeness unchangeableness continuance continuity oneness uneventfulness humdrumness prolixity feebleness weakness inanity unimaginativeness repetition spiritlessness emptiness grimness predictability gloom gloominess cheerlessness dinginess sobriety greyness dowdiness plainness grayness ponderousness laboriousness doldrums blahs endlessness listlessness restlessness deadness drudgery irksomeness yawn infertility barrenness aridness unfruitfulness unproductiveness bareness desolation poverty fruitlessness worthlessness futility