| ambiguous(adjective, uncertain, unstable, doubtful, shaky) |
| contingent(adjective, uncertain, unstable, doubtful, shaky) |
| equivocal(adjective, uncertain, unstable, doubtful, shaky) |
| infirm(adjective, change, strong, weak, unstable) |
| open(adjective, adverb, uncertain, unstable, doubtful) |
| tottery(adjective, change, strong, weak, unstable) |
| vulnerable(adjective, bad, delicate, heavy, uncertain) |
| weak(adjective, change, strong, unstable, unsettled) |
| desperate |
| dodgy(adjective, risky, dangerous, treacherous, unsafe) |
| explosive(adjective, upset, shaky, insecure, risky) |
| fallible(adjective, uncertainty, unreliable, insecure, treacherous) |
| flimsy |
| indecisive(adjective, uncertain, unstable, doubtful, unsettled) |
| insubstantial(unstable, vulnerable, dangerous, unprotected, unguarded) |
| menacing(adjective, bad, heavy, risky, dangerous) |
| mortal(adjective, human, dangerous, transientness) |
| nice(delicate, tricky, thorny) |
| on thin ice(expression, adjective, idiom, delicate, uncertain) |
| rocky(adjective, weak, delicate, uncertain, awkward) |