| irresponsible(adjective, indifferent, careful, casual, thoughtless) |
| lax(adjective, soft, careless, indifferent, casual) |
| offhand(adjective, careless, indifferent, casual, thoughtless) |
| oscitant(noun, adjective, cold, forget, uncaring) |
| slipshod(adjective, soft, careless, indifferent, casual) |
| sloppy(adjective, soft, careless, indifferent, casual) |
| uninquisitive(adjective, incurious) |
| unobliging(adjective, cold, forget, uncaring, inattentive) |
| unsolicitous(adjective, cold, forget, uncaring, inattentive) |
| unsuspecting(adjective, innocent, ignorant, unfamiliar, unconscious) |
| unwatchful(adjective, careless, cold, forget, bold) |
| absorbed(adjective, careless, remote, distracted, heedless) |
| apathetic(noun, adjective, sharp, rude, careless) |
| asinine(adjective, silly, foolish, senseless, unnecessary) |
| deaf(adjective, sharp, rude, indifferent, short) |
| derelict(adjective, soft, careless, indifferent, tolerant) |
| distant(adjective, imagining, fantasizing) |
| haphazard(adjective, unknowing, unaware, neglectful, unsuspecting) |
| impulsive(adjective, careless, bold, thoughtless, inappropriate) |
| inane(adjective, obtuse, unperceptive, unobservant) |