| apprehensive(adjective, excited, anxious, shaky, tense) |
| highly strung(expression, adjective, idiom) |
| in suspense |
| quick-tempered(adjective, nervous, emotional, restless, volatile) |
| temperamental(adjective, nervous, emotional, restless, unreliable) |
| uneasy(adjective, adverb, excited, anxious, nervous) |
| volcanic(adjective, nervous, emotional, restless, volatile) |
| explosive(adjective, unstable, unpredictable, unreliable, fickle) |
| highly-strung |
| hot-tempered(adjective, nervous, emotional, restless, volatile) |
| irascible(adjective, nervous, emotional, tense, critical) |
| taut(anxious, worried, tense) |
| volatile(adjective, anxious, unstable, restless, fiery) |
| antsy(adjective, nervous, worried, restless, uneasy) |
| cranky(adjective, excitable) |
| crusty(adjective, excitable) |
| fiery(adjective, lively, nervous, unstable, restless) |
| hypersensitive(adjective, understanding, keen, fine, sensible) |
| impatient(adjective, adverb, passionate, excited, anxious) |
| passionate(adjective, excited, unstable, restless, unreliable) |