| hard-line(adjective, persistent, obstinate, insistent, dogged) |
| hard-nosed(determined, impulsive, stubborn, reckless, impetuous) |
| hard-shelled(adjective, persistent, obstinate, insistent, dogged) |
| heedless(determined, impulsive, stubborn, reckless, impetuous) |
| hell-bent(adjective, persistent, obstinate, insistent, dogged) |
| hidebound(adjective, persistent, obstinate, insistent, dogged) |
| hostile(negative, different, adverse, conflicting, opposing) |
| hotheaded(adjective, passionate, unstable, unpredictable, unreliable) |
| hyper(adjective, passionate, unstable, unpredictable, unreliable) |
| hypersensitive(adjective, passionate, unstable, unpredictable, unreliable) |
| impatient(adjective, passionate, unstable, restless, unpredictable) |
| impious |
| imprudent(determined, impulsive, stubborn, reckless, heedless) |
| impulsive(determined, stubborn, reckless, heedless, impetuous) |
| in bad mood(expression, adjective, idiom, passionate, unstable) |
| incompliant |
| inconsistent(adjective, passionate, negative, unstable, hostile) |
| indisciplined |
| inimical(negative, hostile, different, adverse, conflicting) |
| insurgent(adjective, persistent, obstinate, insistent, dogged) |