| precarious(adjective, unreliable, insecure, treacherous, incalculable) |
| slippery(adjective, false, dishonest, deceitful, unreliable) |
| unsound(adjective, uncertain, unstable, feeble, unsettled) |
| fitful(adjective, unstable, unsettled, variable) |
| hesitant(adjective, uncertain, nervous, unstable, feeble) |
| indefinite(adjective, vague, unpredictable, unreliable, unknown) |
| infirm(adjective, uncertain, feeble, shaky, hesitant) |
| skittish(adjective, nervous, unstable, unsettled, variable) |
| spineless(adjective, uncertain, nervous, unstable, hesitant) |
| trick(adjective, strong, unpredictable, unreliable, variable) |
| trustless(adjective, uncertain, dishonest, doubtful, deceitful) |
| unsettled(adjective, uncertain, unstable, irregular, vague) |
| ambiguous(adjective, vague, unknown, general, unclear) |
| careless(adjective, foolish, thoughtless, unpredictable, unreliable) |
| changeful(adjective, unstable, irregular, unsettled, unpredictable) |
| disloyal(adjective, false, dishonest, deceitful, unreliable) |
| doubtful(adjective, uncertain, nervous, vague, dubious) |
| false(adjective, dishonest, deceitful, unpredictable, unreliable) |
| feckless(adjective, careless, immoral, thoughtless, reckless) |
| iffy(adjective, uncertain, nervous, doubtful, dubious) |