| irritable(adjective, person, keen, difficult, intense) |
| irascible(adjective, keen, sharp, difficult, intense) |
| choleric(adjective, keen, sharp, difficult, intense) |
| peppery(adjective, upset, keen, sharp, intense) |
| excitable(adjective, upset, intense, violent) |
| combustible(adjective, intense, violent, fierce) |
| hot-headed(adjective, intense, violent, nervous) |
| impulsive(adjective, intense, restless, fiery) |
| hot-blooded(adjective, intense, passionate, violent) |
| impetuous(adjective, keen, intense, violent) |
| vehement(adjective, keen, intense, violent) |
| violent(adjective, keen, difficult, intense) |
| ablaze(adjective, intense, violent, fierce) |
| aflame(adjective, intense, violent, fierce) |
| agitable(adjective, intense, violent, nervous) |
| enthusiastic(intense, violent, nervous, restless) |
| febrile(adjective, intense, violent, fierce) |
| fevered(adjective, intense, violent, fierce) |
| feverish(adjective, keen, intense, violent) |
| fierce(nasty, hostile, restless, fiery) |