| downright |
| elastic(lively, impulsive, unpredictable, changeable, temperamental) |
| emotional(passionate, violent, thoughtless, abrupt, impetuous) |
| erect(adjective, vertical) |
| erratic(lively, impulsive, unpredictable, changeable, temperamental) |
| expansive(lively, impulsive, unpredictable, changeable, temperamental) |
| extemporaneous(thoughtless, impetuous, unwary) |
| fickle(lively, impulsive, unpredictable, changeable, temperamental) |
| flaky(passionate, violent, lively, thoughtless, changeable) |
| flip(lively, unpredictable, changeable, resilient) |
| fluctuating(lively, unpredictable, changeable, temperamental, resilient) |
| gay(lively, impulsive, unpredictable, changeable, resilient) |
| gone off deep end(expression, idiom, passionate, violent, thoughtless) |
| hasty(passionate, violent, thoughtless, abrupt, impetuous) |
| headlong(passionate, violent, thoughtless, abrupt, impetuous) |
| hot-and-cold(passionate, violent, thoughtless, abrupt, impetuous) |
| impetuous(passionate, violent, thoughtless, abrupt, unwary) |
| impulsive(adjective, lively, thoughtless, unpredictable, changeable) |
| instinctive(passionate, violent, thoughtless, abrupt, impetuous) |
| intuitive(passionate, violent, thoughtless, abrupt, impetuous) |