| precarious(adjective, weak, unstable, doubtful, unsettled) |
| procrastinating(verb, weak, indecisive, procrastinating) |
| pulsating(verb, adjective, oscillating) |
| quavering |
| questioning(verb, uncertain, nervous, hesitant, dubious) |
| quicksilver(changeable, untrue, indecisive, inconsistent) |
| random(adjective, capricious) |
| rickety(adjective, weak, unstable, unsettled, shaky) |
| seesawing(verb, oscillating) |
| skittish(unstable, unsettled, variable, unsteady, capricious) |
| small |
| soft(adjective, weak, gentle, modest, nervous) |
| spasmodic(adjective, unstable, unsettled, unpredictable, unreliable) |
| spiritless(weak, soft, nervous, shy, feeble) |
| sporadic(adjective, capricious) |
| suspicious(uncertain, nervous, doubtful, hesitant, dubious) |
| teetering(adjective, shaky, uneven, unbalanced, unsteady) |
| tergiversating |
| throbbing(verb, adjective, oscillating) |
| transformable(adjective, unstable, unsettled, changeable, variable) |