| frenzied(careless, thoughtless, impulsive, reckless, hasty) |
| furious(careless, thoughtless, impulsive, reckless, hasty) |
| half-grown(adjective, inexperienced, young, childish, undeveloped) |
| harebrained(careless, thoughtless, impulsive, reckless, hasty) |
| headlong(careless, thoughtless, impulsive, reckless, hasty) |
| headstrong(careless, thoughtless, impulsive, reckless, hasty) |
| heedless(careless, thoughtless, impulsive, reckless, hasty) |
| hotheaded(careless, thoughtless, impulsive, reckless, hasty) |
| ill-seasoned |
| imperfect(inexperienced, young, childish, undeveloped, unformed) |
| impetuous(careless, thoughtless, impulsive, reckless, hasty) |
| imprudent(careless, thoughtless, impulsive, reckless, hasty) |
| in advance(expression, quick, early, headlong, beforehand) |
| incautious(careless, thoughtless, impulsive, reckless, hasty) |
| inchoate |
| indigested |
| indiscreet(careless, thoughtless, impulsive, reckless, hasty) |
| infantile(inexperienced, young, childish, undeveloped, unformed) |
| infantine(inexperienced, young, childish, undeveloped, unformed) |
| injudicious(careless, thoughtless, impulsive, reckless, hasty) |