| unperceptive(adjective, inattentive, blind, obtuse) |
| unregardful(adjective, cold, forget, uncaring, inattentive) |
| unsolicitous(adjective, cold, forget, uncaring, inattentive) |
| unthoughtful(adjective, cold, forget, uncaring, inattentive) |
| absent(adjective, careless, indifferent, apathetic, unconcerned) |
| abstracted(noun, adjective, careless, casual, thoughtless) |
| cursory(casual, inattention, happy-go-lucky, slapdash) |
| disregardful(casual, rash, happy-go-lucky, oblivious, slapdash) |
| dozy(adjective, careless, distracted, abstracted, daydreaming) |
| dreamy(adjective, careless, indifferent, apathetic, unconcerned) |
| eyeless |
| ignorant(adjective, indifferent, unconcerned, insensitive, unaware) |
| insensible(adjective, unaware) |
| listless(adjective, careless, indifferent, apathetic, distracted) |
| offhand(casual, inattention, happy-go-lucky, slapdash) |
| out to lunch(expression, adjective, idiom, careless, indifferent) |
| reckless(adjective, casual, rash, obtuse, happy-go-lucky) |
| unnoticing(adjective, careless, indifferent, apathetic, unconcerned) |
| unobserving(adjective, careless, indifferent, apathetic, distracted) |
| absentminded(adjective, careless, indifferent, apathetic, unconcerned) |