| flivver |
| fluctuant(weak, unstable, unsettled, shaky, unsteady) |
| groggy |
| heap(noun, wreck, crate, jalopy) |
| hulk |
| infirm(adjective, weak, unstable, unsettled, shaky) |
| insecure(adjective, weak, unstable, unsettled, shaky) |
| jellylike(weak, unstable, unsettled, unsteady, trembling) |
| jerry-built(weak, unstable, unsettled, shaky, unsteady) |
| jittery(weak, unstable, unsettled, unsteady, trembling) |
| makeshift(adjective, tottery) |
| nervous(weak, unstable, unsettled, unsteady, trembling) |
| not set(expression, weak, unstable, unsettled, unsteady) |
| pan |
| precarious(adjective, weak, unstable, unsettled, shaky) |
| quaking(weak, unstable, unsettled, unsteady, trembling) |
| quivery(weak, unstable, unsettled, unsteady, trembling) |
| rocky(adjective, weak, unstable, unsettled, shaky) |
| rootless(weak, unstable, unsettled, unsteady, trembling) |
| ruin |