| stop at nothing(expression, idiom, fickle, untrustworthy, unprincipled) |
| surreptitious(dishonest, cunning, deceitful, sneaky, underhanded) |
| traitorous(fickle, untrustworthy, unprincipled) |
| treasonable(fickle, untrustworthy, unprincipled) |
| treasonous(fickle, untrustworthy, unprincipled) |
| trustless(fickle, untrustworthy, unprincipled) |
| unassured(fickle, untrustworthy, unprincipled) |
| unconverted(fickle, untrustworthy, unprincipled) |
| under cover(expression, dishonest, deceitful, fickle, untrustworthy) |
| under wraps(expression, dishonest, cunning, deceitful, sneaky) |
| undercover(dishonest, cunning, deceitful, sneaky, underhanded) |
| underhanded(dishonest, cunning, deceitful, sneaky, underhand) |
| undutiful(fickle, untrustworthy, unprincipled) |
| unfaithful(fickle, untrustworthy, unprincipled) |
| unloyal(fickle, untrustworthy, unprincipled) |
| unpatriotic(fickle, untrustworthy, unprincipled) |
| untrustworthy(fickle, unprincipled) |
| untrusty(fickle, untrustworthy, unprincipled) |
| untruthful(fickle, untrustworthy, unprincipled) |
| wrong(corrupt, dishonest, immoral, unprincipled) |