| disaffected(adjective, untrue, untrustworthy, treacherous, unfaithful) |
| double-dealing(fickle, untrustworthy, unprincipled, dirty-dealing) |
| double dealing(expression, fickle, untrustworthy, unprincipled, dirty-dealing) |
| duplicitous(fickle, untrustworthy, unprincipled) |
| estranged(adjective, untrue, untrustworthy, treacherous, unfaithful) |
| extracurricular(fickle, untrustworthy, unprincipled, dirty-dealing) |
| fair-weather(fickle, untrustworthy, unprincipled) |
| falsehearted(fickle, untrustworthy, unprincipled, dirty-dealing) |
| fickle(adjective, untrue, untrustworthy, unprincipled, treacherous) |
| fly by night(expression, idiom, fickle, untrustworthy, unprincipled) |
| foresworn(fickle, untrustworthy, unprincipled, dirty-dealing) |
| heretical |
| inconstant(fickle, untrustworthy, unprincipled) |
| lubricious(fickle, untrustworthy, unprincipled, dirty-dealing) |
| lying(fickle, untrustworthy, unprincipled, dirty-dealing) |
| mercentary(fickle, untrustworthy, unprincipled, dirty-dealing) |
| moonlighting(fickle, untrustworthy, unprincipled, dirty-dealing) |
| not true to(expression, idiom, fickle, untrustworthy, unprincipled) |
| of bad faith(expression, idiom, fickle, untrustworthy, unprincipled) |
| on the QT(expression, idiom, fickle, untrustworthy, unprincipled) |