| hanging by thread(expression, idiom, nervous, insecure, unsure) |
| impotent(adjective, soft, uncertain, nervous, unstable) |
| incomputable(adjective, incalculable) |
| ineffectual(adjective, soft, uncertain, nervous, unstable) |
| intermittent(irregular, unpredictable, unreliable) |
| irregular(unpredictable, unreliable) |
| jarring(shaky, reverberant) |
| jerrybuilt(shaky, jarring, reverberant) |
| jumping(shaky, jarring, reverberant) |
| jumpy(nervous, insecure, unsure) |
| laid-back(adjective, soft, nervous, hesitant, fearful) |
| laid back(expression, adjective, uncertain, unstable, hesitant) |
| locomotive |
| measureless(adjective, incalculable) |
| mercurial(irregular, unpredictable, unreliable) |
| nerveless(adjective, soft, uncertain, nervous, unstable) |
| odd |
| on thin ice(expression, idiom, nervous, insecure, unsure) |
| palsied(adjective, soft, uncertain, nervous, unstable) |
| powerless(adjective, soft, uncertain, nervous, unstable) |