| pseudo(adjective, unpredictable, hollow, fickle, variable) |
| questionable(adjective, unpredictable, fickle, variable, undependable) |
| sham(adjective, unpredictable, hollow, fickle, variable) |
| shifty(adjective, unpredictable, fickle, variable, undependable) |
| traitorous |
| treacherous(adjective, unpredictable, fickle, variable, undependable) |
| tricky(adjective, unpredictable, fickle, variable, undependable) |
| uncertain(adjective, unpredictable, fickle, variable, undependable) |
| unconvincing(adjective, unpredictable, hollow, fickle, variable) |
| undependable(adjective, unpredictable, fickle, variable, fly-by-night) |
| underhand(adjective, unpredictable, fickle, variable, undependable) |
| underhanded(adjective, unpredictable, hollow, fickle, variable) |
| unfaithful(adjective, unpredictable, fickle, variable, undependable) |
| unfitting(wrong, improper, untrue, unseemly, imprecise) |
| unpredictable(adjective, fickle, variable, undependable, fly-by-night) |
| unseemly(wrong, improper, untrue, imprecise, erroneous) |
| unsound(adjective, wrong, false, unpredictable, fickle) |
| unstable(adjective, unpredictable, fickle, variable, undependable) |
| unsuitable(wrong, improper, untrue, imprecise, erroneous) |
| unsure(adjective, unpredictable, fickle, variable, undependable) |