| ingenuous(adjective, innocent, gullible) |
| innocent(adjective, gullible) |
| regardless(adjective, cold, forget, uncaring, inattentive) |
| unadvised(adjective, smart, careless, thoughtless, heedless) |
| unalert(adjective, careless, thoughtless, rash, reckless) |
| unsophisticated |
| unthoughtful(adjective, cold, forget, uncaring, inattentive) |
| distrait(adjective, cold, forget, uncaring, inattentive) |
| forgetful(adjective, cold, forget, uncaring, inattentive) |
| headlong(adjective, careless, foolish, stupid, bold) |
| impolitic(adjective, careless, foolish, stupid, thoughtless) |
| impulsive(careless, foolish, thoughtless, rash, impetuous) |
| incogitant(adjective, cold, forget, uncaring, inattentive) |
| incurious(adjective, cold, forget, uncaring, inattentive) |
| inexact(adjective, cold, forget, uncaring, inattentive) |
| offhand(neglect, thoughtless, unqualified, impetuous, unsuspecting) |
| oscitant(adjective, cold, forget, uncaring, inattentive) |
| perfunctory(adjective, cold, forget, uncaring, inattentive) |
| short-sighted(adjective, unthinking) |
| simpleminded |