| cheerfulness |
| committing perjury(expression, fickle, untrustworthy, unprincipled) |
| deceitful(adjective, false, dishonest, unreliable, undependable) |
| dirty-dealing(fickle, untrustworthy, unprincipled) |
| dirty dealing(expression, fickle, untrustworthy, unprincipled) |
| double-dealing(fickle, untrustworthy, unprincipled) |
| double dealing(expression, fickle, untrustworthy, unprincipled) |
| duplicitous(fickle, untrustworthy, unprincipled) |
| extracurricular(fickle, untrustworthy, unprincipled) |
| false(adjective, dishonest, deceitful, unreliable, undependable) |
| falsehearted(fickle, untrustworthy, unprincipled) |
| foresworn(fickle, untrustworthy, unprincipled) |
| inconstant(fickle, untrustworthy, unprincipled) |
| lubricious(fickle, untrustworthy, unprincipled) |
| lying(fickle, untrustworthy, unprincipled) |
| mercentary(fickle, untrustworthy, unprincipled) |
| moonlighting(fickle, untrustworthy, unprincipled) |
| not true to(expression, idiom, fickle, untrustworthy, unprincipled) |
| of bad faith(expression, idiom, fickle, untrustworthy, unprincipled) |
| on the QT(expression, idiom, fickle, untrustworthy, unprincipled) |