| unconscious(adjective, careless, casual, unfeeling, numb) |
| uncurious(adjective, quiet, indifferent, detached, casual) |
| undemanding(adjective, feature, state, calm, mild) |
| unexcited(adjective, calm, quiet, cool, moderate) |
| unheedful(adjective, careless, indifferent, sloppy, inattentive) |
| unheeding(adjective, rude, indifferent, careful, casual) |
| unhurried(adjective, feature, state, calm, dull) |
| unimpressed(adjective, calm, quiet, cool, moderate) |
| unwilling(adjective, indifferent, unresponsive, oblivious) |
| abstracted(noun, adjective, careless, indifferent, casual) |
| anesthetized(adjective, unfeeling, numb, insensitive, under) |
| benumbed(adjective, hard, unfeeling, unsympathetic, numb) |
| blah(adjective, calm, dull, weak, easy) |
| blunt(adjective, insensitive) |
| bold(adjective, carefree, fearless, unworried) |
| bored(adjective, cool, indifferent, weary, apathetic) |
| buoyant(adjective, feature, state, trait) |
| cavalier(adjective, careless, indifferent, casual, easygoing) |
| certain(adjective, confident) |
| cheerful(adjective, feature, state, trait) |