| negligent(rash, obtuse, oblivious, neglectful, unperceptive) |
| out to lunch(expression, idiom, rash, oblivious, neglectful) |
| rash(obtuse, oblivious, neglectful, unperceptive, unobservant) |
| reckless(rash, obtuse, oblivious, neglectful, unperceptive) |
| thoughtless(adjective, careless, stupid, rash, unthinking) |
| undiscerning(careless, stupid, unthinking, obtuse, unperceptive) |
| unheeding(obtuse, unperceptive, unobservant) |
| unmindful(rash, obtuse, oblivious, neglectful, unperceptive) |
| unobservant(careless, stupid, rash, unthinking, obtuse) |
| unreasonable(careless, stupid, unthinking, obtuse, unperceptive) |
| unreasoning(careless, stupid, unthinking, obtuse, unperceptive) |
| unreflective(careless, stupid, unthinking, obtuse, unperceptive) |
| unthinking(careless, stupid, rash, obtuse, oblivious) |
| absent-minded(careless, stupid, unthinking, obtuse, unperceptive) |
| daydreaming(rash, oblivious, neglectful) |
| disregardful(rash, oblivious, neglectful) |
| dull(careless, stupid, unthinking, obtuse, unperceptive) |
| fast and loose(expression, idiom, rash, oblivious, neglectful) |
| foolhardy(rash, oblivious, neglectful) |
| foolish(careless, stupid, unthinking, obtuse, unperceptive) |