| unsuspicious(adjective, innocent, thoughtless, green, naive) |
| brash(adjective, careless, foolish, thoughtless, impulsive) |
| credulous(adjective, innocent, thoughtless, naive, heedless) |
| hasty(adjective, careless, foolish, thoughtless, impulsive) |
| remiss(adjective, cold, forget, uncaring, inattentive) |
| gullible(adjective, innocent, green, naive) |
| impetuous(adjective, careless, thoughtless, impulsive, rash) |
| unheeding(adjective, cold, forget, uncaring, inattentive) |
| foolhardy(adjective, careless, foolish, thoughtless, impulsive) |
| injudicious(adjective, careless, foolish, thoughtless, impulsive) |
| inobservant(adjective, cold, forget, uncaring, inattentive) |
| mindless |
| unobservant(adjective, cold, forget, uncaring, inattentive) |
| unprepared(adjective, thoughtless, unqualified, heedless, unsuspecting) |
| unvigilant(adjective, careless, thoughtless, rash, reckless) |
| unwise(adjective, foolish, thoughtless, rash, irresponsible) |
| absent-minded(adjective, cold, forget, uncaring, inattentive) |
| foolish(adjective, careless, stupid, thoughtless, impulsive) |
| ignorant(adjective, thoughtless, heedless, ill-advised) |
| ill-advised(adjective, careless, foolish, stupid, bold) |