| quicksilver(fickle, untrustworthy, unprincipled, dirty-dealing) |
| snake in grass(expression, idiom, fickle, untrustworthy, unprincipled) |
| stop-at-nothing(fickle, untrustworthy, unprincipled, dirty-dealing) |
| stop at nothing(expression, idiom, fickle, untrustworthy, unprincipled) |
| sub-rosa(fickle, untrustworthy, unprincipled, dirty-dealing) |
| traitorous(fickle, untrustworthy, unprincipled, dirty-dealing) |
| treacherous(fickle, untrustworthy, unprincipled, dirty-dealing) |
| treasonable(fickle, untrustworthy, unprincipled, dirty-dealing) |
| treasonous(fickle, untrustworthy, unprincipled, dirty-dealing) |
| trustless(fickle, untrustworthy, unprincipled) |
| adulterine(fickle, untrustworthy, unprincipled, dirty-dealing) |
| bigamous(fickle, untrustworthy, unprincipled) |
| changeful(fickle, untrustworthy, unprincipled, dirty-dealing) |
| clandestine(adjective, illicit) |
| committing perjury(expression, fickle, untrustworthy, unprincipled, dirty-dealing) |
| dirty-dealing(fickle, untrustworthy, unprincipled) |
| dirty dealing(expression, fickle, untrustworthy, unprincipled, dirty-dealing) |
| dishonest(fickle, untrustworthy, unprincipled, dirty-dealing) |
| disloyal(fickle, untrustworthy, unprincipled, dirty-dealing) |
| double-dealing(fickle, untrustworthy, unprincipled, dirty-dealing) |