| mortal |
| mousy(adjective, meek, timid, unsure, unassuming) |
| movable(adjective, clear, separate, free, easy) |
| ominous(adjective, dangerous) |
| on thin ice(expression, adjective, idiom, delicate, uncertain) |
| parlous(adjective, bad, heavy, risky, dangerous) |
| perishable |
| pregnable(adjective, unreliable, treacherous, incalculable) |
| problematic(adjective, delicate, uncertain, nervous, unstable) |
| provisional |
| relaxed(adjective, clear, separate, free, easy) |
| shifty(uneven, untrustworthy, unbalanced, unhinged, sneaky) |
| slack(adjective, clear, separate, free, easy) |
| slackened(adjective, clear, separate, free, easy) |
| susceptible(adjective, weak, vulnerable) |
| tremulous(weak, unstable, unsettled, unsteady, trembling) |
| unassertive(adjective, meek, timid, unsure, unassuming) |
| unhinged(adjective, clear, separate, free, easy) |
| unsecured(adjective, clear, separate, free, easy) |
| unshielded(adjective, vulnerable, dangerous, unprotected, precarious) |