| vacillating(noun, verb, adjective, adverb, weak) |
| capricious(adjective, free, wild, lively, active) |
| wavering(noun, adjective, weak, uncertain, unstable) |
| variable(adjective, free, rough, wild, lively) |
| changeable(adjective, free, rough, wild, lively) |
| erratic(adjective, lively, active, unstable, irregular) |
| fickle(adjective, weak, free, wild, lively) |
| inconstant(adjective, free, wild, lively, active) |
| alternating(verb, adjective, variable, changing, changeableness) |
| unsteady(adjective, weak, rough, uncertain, unstable) |
| fitful(adjective, free, rough, wild, unstable) |
| unstable(adjective, weak, lively, uncertain, active) |
| irregular(adjective, rough, lively, active, unstable) |
| irresolute(adjective, weak, uncertain, unstable, irregular) |
| sporadic(adjective, regular, irregular, routine, unreliable) |
| unpredictable(adjective, lively, active, unstable, irregular) |
| volatile(adjective, free, wild, lively, active) |
| mercurial(adjective, lively, active, unstable, irregular) |
| mutable(adjective, unstable, unsettled, unpredictable, unreliable) |
| oscillating(noun, verb, adjective, irregular, hesitant) |