| passionate(adjective, unstable, unpredictable, unreliable, rash) |
| petulant(adjective, passionate, unstable, unpredictable, unreliable) |
| temperamental(adjective, unpredictable, unreliable, erratic, moody) |
| uncertain(adjective, passionate, unstable, unpredictable, unreliable) |
| undependable(adjective, passionate, unstable, unpredictable, unreliable) |
| unpredictable(adjective, passionate, unstable, unreliable, rash) |
| unreliable(adjective, passionate, unstable, unpredictable, rash) |
| variable(adjective, passionate, unstable, unpredictable, unreliable) |
| volatile(adjective, passionate, unstable, unpredictable, unreliable) |
| willful(adjective, passionate, unstable, unpredictable, unreliable) |
| acrimonious(adjective, gloomy, depressed, pessimistic) |
| blue(adjective, gloomy, depressed, pessimistic) |
| brusque(adjective, gloomy, depressed, pessimistic) |
| cantankerous(adjective, gloomy, depressed, pessimistic) |
| choleric(adjective, gloomy, depressed, pessimistic) |
| churlish(adjective, gloomy, depressed, pessimistic) |
| crabbed(adjective, gloomy, depressed, pessimistic) |
| crabby(adjective, gloomy, depressed, pessimistic) |
| cranky(adjective, gloomy, depressed, pessimistic) |
| cross(adjective, gloomy, depressed, pessimistic) |