| stop at nothing(expression, idiom, fickle, untrustworthy, unprincipled) |
| sub-rosa(fickle, untrustworthy, unprincipled, dirty-dealing) |
| subversive(adjective, untrue, untrustworthy, treacherous, unfaithful) |
| treasonous(fickle, untrustworthy, unprincipled, dirty-dealing) |
| trustless(fickle, untrustworthy, unprincipled) |
| truthless(adjective, true) |
| unassured(fickle, untrustworthy, unprincipled) |
| under cover(expression, fickle, untrustworthy, unprincipled, dirty-dealing) |
| underhand(fickle, untrustworthy, unprincipled, unfaithful, disloyal) |
| undutiful(fickle, untrustworthy, unprincipled, dirty-dealing) |
| unethical(fickle, untrustworthy, unprincipled, dirty-dealing) |
| unprincipled(fickle, untrustworthy, dirty-dealing) |
| unstable(adjective, false, dishonest, dubious, untrue) |
| untrusty(fickle, untrustworthy, unprincipled) |
| wavering(adjective, false, dishonest, dubious, untrue) |
| wormlike(adjective, untrue, untrustworthy, treacherous, unfaithful) |
| yo-yo(fickle, untrustworthy, unprincipled, dirty-dealing) |
| yoyo(fickle, untrustworthy, unprincipled, dirty-dealing) |