| grumbling(adjective, negative, sullen, crabby, sulky) |
| harsh |
| hopped-up |
| huffish |
| ill-humoured |
| impassioned(adjective, strong, intense, enthusiastic, powerful) |
| impatience |
| intent(adjective, strong, keen, intense, enthusiastic) |
| itching(adjective, keen, enthusiastic, eager, chafing) |
| lively(adjective, strong, keen, intense, energetic) |
| mercurial(adjective, keen, energetic, passionate, active) |
| perverse(adjective, restless, sullen, crabby, moody) |
| prompt(fast, quick, rapid, speedy, swift) |
| quarrelsome(adjective, irritable, touchy, volatile, fiery) |
| reckless(violent, fast, nervous, quick, restless) |
| refractory(violent, fast, quick, restless, disobedience) |
| ripe(adjective, keen, informal, violent, anxious) |
| running(adjective, hasty) |
| sensitive(adjective, nervous, unstable, restless, unreliable) |
| tetchy(adjective, nervous, short, sensitive, irritable) |