| ambivalent(adjective, shy, feeble, doubtful, hesitant) |
| doubtful(adjective, weak, uncertain, nervous, shy) |
| erratic(adjective, unstable, irregular, doubtful, unsettled) |
| timid(adjective, weak, uncertain, nervous, shy) |
| unreliable(adjective, uncertain, true, nervous, unstable) |
| unresolved(adjective, uncertain, doubtful, hesitant, dubious) |
| wishy-washy(adjective, dull, weak, uncertain, unstable) |
| dubious(adjective, uncertain, nervous, doubtful, unsettled) |
| faltering(adjective, weak, delicate, uncertain, unstable) |
| indefinite(adjective, uncertain, doubtful, vague, hesitant) |
| undependable(adjective, uncertain, nervous, unstable, irregular) |
| infirm(adjective, weak, delicate, sick, unsettled) |
| mercurial(adjective, unstable, irregular, unsettled, unpredictable) |
| mutable(adjective, unstable, unsettled, unpredictable, unreliable) |
| oscillating(noun, verb, adjective, hesitant, changeable) |
| shaky(adjective, weak, delicate, uncertain, nervous) |
| wobbly(adjective, weak, delicate, uncertain, nervous) |
| flighty(adjective, unstable, unsettled, changeable, unsteady) |
| insecure(adjective, weak, delicate, uncertain, nervous) |
| shifting(verb, adjective, unstable, irregular, unsettled) |