difficultness, difficulty

simplicity, helpfulness, effortlessness, tangibility, lightness, simpleness, speediness, unusualness, unobtrusiveness, sturdiness, coolness, smoothness, comprehensibility, discreetness, neatness, handiness, naturalness, abstractness, cleanness, friendliness, conciseness, pleasantness, carefulness, fluidity, concreteness, smartness, trueness, approachability, provocativeness, respectfulness, contentedness, directness, deliberateness, practicality, understandability, comfortableness, predictability, exactness, imaginativeness, unpretentiousness, slickness, tactfulness, solidness, esthetical, strictness, stylishness, intangibility, litheness, trickiness, sociability, artlessness, promptness, informality, impressiveness, originality, articulateness, tactility, briskness, restrictiveness, perspicuity, homeliness, usability, heftiness, accessibility, sophistication, ruefulness, wearability, headiness, punchiness, liveliness, immediacy, bizarreness, instantaneity, intricacy, seductiveness, efficaciousness, inexpensiveness, elegance, peacefulness, dispassion, tidiness, centeredness, sparseness, jadedness, contentment, straightforwardness, compactness, chicness, desirability, innovativeness, pliability, rawness, familiarity, snappiness, comprehensiveness, haphazardness, gutsiness, ephemerality, satisfaction, obliqueness, exquisiteness, unconventionality, ease, amiability, mildness, docility, affability, casualness, complacency, delicacy, quickness, equanimity, gentleness, readiness, calmness, fastidiousness, leniency

dreaminess, languor

quality, quietness, quietude, tranquility, tranquillity

relaxation