arbitrary automatic capricious careless casual culpably negligent derelict disregardant disregardful distracted distrait feckless gut heedless ill-advised ill-considered ill-devised inattentive inconsiderate incurious indeliberate indifferent inobservant involuntary laissez-faire lax loose neglectful neglecting negligent noninterfering nonrestrictive off-guard overly permissive permissive procrastinating reasonless reflex reflexive regardless relaxed remiss scamping skimping slack slighting slurring snap spontaneous thoughtless unadvised uncalculated uncalculating uncaring uncircumspect unconscious unconsidered undeliberate undeliberated undesigned undevised unguarded unheedful unheeding unintended unintentional unmarking unmeditated unmindful unnoticing unnoting unobservant unobserving unplanned unpremeditated unpurposed unreasoning unreflecting unreflective unremarking unrigorous unstudied unthinking unthought unthoughtful unwary unwatchful unwilled wrecking