| quaking(weak, unstable, unsettled, shaky, unsteady) |
| quivery(weak, unstable, unsettled, unsteady, trembling) |
| rambling(irregular, unpredictable, unreliable) |
| rattletrap(weak, unstable, unsettled, shaky, unsteady) |
| resonant |
| rickety(weak, unstable, unsettled, shaky, dangerous) |
| rocky(weak, unstable, unsettled, shaky, dangerous) |
| roving(irregular, unpredictable, unreliable) |
| shaking(weak, unstable, unsettled, shaky, unsteady) |
| shifting(irregular, unpredictable, unreliable) |
| skeptical(adjective, uncertain, nervous, doubtful, shaky) |
| spasmodic(irregular, unpredictable, unreliable) |
| strange(irregular, unpredictable, unreliable) |
| suspicious(adjective, uncertain, nervous, doubtful, shaky) |
| ticklish(adjective, risky, hazardous, dicey) |
| tottering(weak, unstable, unsettled, shaky, unsteady) |
| tottery(adjective, weak, unstable, unsettled, insecure) |
| touch and go(expression, adjective, idiom, uncertain, nervous) |
| trembling(weak, unstable, unsettled, shaky, unsteady) |
| tremorous(weak, unstable, unsettled, shaky, unsteady) |