| simple(adjective, silly, foolish, natural, senseless) |
| uncritical(adjective, casual, unfussy) |
| uninterested(adjective, dull, indifferent, coarse, casual) |
| unreflective(adjective, stupid, casual, unthinking, inattention) |
| unsolicitous(adjective, cold, forget, indifference, uncaring) |
| unstudied(adjective, artless) |
| untroubled(adjective, feature, state, calm, cool) |
| unwatchful(adjective, cold, forget, bold, thoughtless) |
| unwise(adjective, foolish, thoughtless, inappropriate, rash) |
| abstracted(noun, adjective, indifferent, casual, apathetic) |
| aloof(adjective, calm, cool, relaxed, indifferent) |
| arbitrary(adjective, unstable, unreasonable, casual, unpredictable) |
| blind(adjective, indifferent, apathetic, unconcerned, insensitive) |
| clumsy(adjective, insensitive, unthinking, disordered, untidy) |
| cool(adjective, feature, state, calm, happy) |
| disinterested(adjective, calm, cool, relaxed, indifferent) |
| dispassionate(adjective, calm, cool, relaxed, indifferent) |
| foolish(adjective, wrong, wild, silly, stupid) |
| free and easy(expression, adjective, idiom, feature, state) |
| giddy(adjective, easy, wild, silly, loose) |