| two-timing(adjective, false, improper, fickle, untrue) |
| cheating(adjective, false, improper, untrue, clandestine) |
| illicit(adjective, legal, unfaithful, forbidden) |
| untrue(adjective, false, unfaithful, disloyal, cheating) |
| extracurricular(adjective, fickle, untrustworthy, unprincipled, unfaithful) |
| extramarital(adjective, illicit) |
| perfidious(adjective, false, fickle, untrue, untrustworthy) |
| false(adjective, untrue, unfaithful, disloyal, cheating) |
| fickle(adjective, false, untrue, untrustworthy, unprincipled) |
| unfaithful(adjective, false, improper, fickle, untrue) |
| wandering |
| inconstant(adjective, false, fickle, untrue, untrustworthy) |
| adulterine(adjective, false, fickle, untrue, untrustworthy) |
| disloyal(adjective, false, fickle, untrue, untrustworthy) |
| faithless(adjective, false, fickle, untrue, untrustworthy) |
| immoral(adjective, unfaithful) |
| adulterer |
| adultery |
| double-crossing(adjective, false, improper, fickle, untrue) |
| moonlighting(adjective, false, improper, fickle, untrue) |