| capricious(adjective, lively, unpredictable, changeable, variable) |
| active(lively, unpredictable, changeable) |
| ambivalent |
| any way the wind blows(expression, careless, unstable, unreasonable, unpredictable) |
| arbitrary(careless, unstable, unreasonable, unpredictable, changeable) |
| betwixt and between |
| borderline |
| bubbleheaded(lively, unpredictable, changeable, temperamental) |
| careless(unstable, unreasonable, unpredictable, changeable, variable) |
| changeful(careless, unstable, unreasonable, unpredictable, changeable) |
| contrary(careless, unstable, unreasonable, unpredictable, changeable) |
| crotchety(careless, unstable, unreasonable, unpredictable, changeable) |
| debatable |
| effervescent(careless, lively, unstable, unreasonable, unpredictable) |
| elastic(lively, unpredictable, changeable, temperamental) |
| erratic(careless, lively, unstable, unreasonable, changeable) |
| every which way(expression, careless, unstable, unreasonable, unpredictable) |
| expansive(lively, unpredictable, changeable, temperamental) |
| fanciful(careless, unstable, unreasonable, unpredictable, changeable) |
| fickle(careless, lively, unstable, unreasonable, changeable) |