| undulation(noun, swell, wave, ripple, oscillation) |
| unsteadiness(noun, anxiety, weakness, uncertainty, shake) |
| variability(noun, anxiety, weakness, shift, uncertainty) |
| indecisiveness(noun, delay, weakness, doubt, uncertainty) |
| irregularity(noun, change, anxiety, weakness, uncertainty) |
| unevenness(noun, irregularity, instability, shakiness, tremulousness) |
| variance(noun, change, shift, range, difference) |
| volatility(noun, anxiety, weakness, uncertainty, shake) |
| wave(noun, action, act, movement, sign) |
| wobble |
| capriciousness(noun, anxiety, weakness, uncertainty, shake) |
| faltering(noun, delay, weakness, doubt, uncertainty) |
| fickleness(noun, anxiety, weakness, uncertainty, shake) |
| flightiness(noun, anxiety, weakness, uncertainty, shake) |
| libration(noun, oscillation) |
| misgiving(noun, delay, weakness, doubt, uncertainty) |
| motion(noun, action, movement, change, signal) |
| mutability(noun, change, anxiety, weakness, uncertainty) |
| mutation(noun, change, shift, difference, flow) |
| resonance(noun, quiver, shudder, trembling, tremor) |