| capricious(adjective, irregular, unpredictable, unreliable, changeable) |
| freakish(adjective, unusual, careless, unstable, unreasonable) |
| erratic(adjective, careless, unstable, unreasonable, irregular) |
| whimsical(adjective, careless, unstable, unreasonable, irregular) |
| arbitrary(adjective, careless, unstable, unreasonable, irregular) |
| cranky |
| crotchety(adjective, careless, unstable, unreasonable, unpredictable) |
| fanciful(adjective, careless, unstable, unreasonable, unpredictable) |
| temperamental(adjective, careless, unstable, unreasonable, unpredictable) |
| wayward(adjective, careless, unstable, unreasonable, irregular) |
| fantastic |
| flaky(careless, unstable, unreasonable, irregular, unreliable) |
| kinky(careless, unstable, unreasonable, unpredictable, changeable) |
| maggoty |
| moody(careless, unstable, unreasonable, unpredictable, changeable) |
| notional(careless, unstable, unreasonable, unpredictable, changeable) |
| quirky(careless, unstable, unreasonable, unpredictable, changeable) |
| unreasonable(careless, unstable, unpredictable, changeable, variable) |
| vagrant(wandering, roving) |
| wanton |