| quirky(adjective, unpredictable, changeable, variable) |
| rambling(irregular, unpredictable) |
| rash(adjective, careless, immoral, thoughtless, reckless) |
| reckless(adjective, careless, thoughtless, negligent) |
| recreant(adjective, false, dishonest, dubious, untrue) |
| restless(unstable, unsettled, variable, capricious, fluctuating) |
| roving(irregular, unpredictable) |
| scatterbrained(careless, excited, immoral, thoughtless, vague) |
| sensitive(adjective, delicate, passionate, uncertain, unstable) |
| sharp(adjective, false, dishonest, deceitful, undependable) |
| sly(false, dishonest, untrustworthy, misleading, illusory) |
| spasmodic(unstable, irregular, unsettled, variable, erratic) |
| spineless(adjective, uncertain, nervous, unstable, useless) |
| spurious(false, misleading, illusory) |
| tentative(doubtful, vague, unsure) |
| tottering(adjective, ill, shaky, unhealthy, frail) |
| touch-and-go |
| traitorous(adjective, false, dishonest, dubious, untrue) |
| treasonable(adjective, false, untrue, unfaithful, disloyal) |
| truthless(adjective, insecure, treacherous, incalculable) |