(n.) Want of attention, or failure to pay attention; disregard; heedlessness; neglect.

accidia acedia apathy ataraxia ataraxy callowness carelessness casualness childishness culpa culpable negligence default delinquency dereliction detachment disconformity disinterest dispassion disregard disregardfulness distractedness distraction diversion divided attention easygoingness failure heedlessness immaturity imprudence inadvertence inadvertency inadvisability inconsideration incuriosity indiscreetness indiscretion indiscrimination inexcitability inexpedience injudiciousness inobservance insouciance irrationality laches lack of affect lackadaisicalness laissez-faire lapse laxity laxness listlessness looseness mindlessness neglect neglectfulness negligence nonadherence nonchalance noncompliance nonconformance nonconformity nonfeasance nonfulfillment noninterference nonobservance nonperformance nonrestriction omission overlooking oversight permissiveness pococurantism pompousness poor stewardship procrastination puerility reasonlessness recklessness regardlessness remissness senselessness slackness slight sloth stuffiness thoughtlessness unanxiousness unconcern unintelligence unmindfulness unobservance unreason unreasonableness unrigorousness unsensibleness unsolicitousness unsoundness unthoughtfulness unwisdom unwiseness withdrawal of attention witlessness