| fast and loose(expression, adjective, idiom, dishonest, immoral) |
| feigned(wrong, fake, false, counterfeit, phony) |
| fictitious(wrong, fake, false, counterfeit, lying) |
| finagling |
| fishy(wrong, fake, false, counterfeit, immoral) |
| fixed(adjective, dishonest, immoral, rotten, untrustworthy) |
| fly-by-night(adjective, bad, wrong, false, dishonest) |
| foresworn(adjective, false, untrue, disloyal, cheating) |
| forged(wrong, fake, false, counterfeit, phony) |
| forsworn(adjective, mean, bad, base, false) |
| framed(wrong, fake, false, counterfeit, phony) |
| geminate |
| geminated |
| gone to the dogs(expression, adjective, idiom, dishonest, immoral) |
| hollow(wrong, false, dishonest, deceitful, incorrect) |
| hypocrite |
| illegal(wrong, corrupt, dishonest, immoral, deceitful) |
| imitation(wrong, fake, false, counterfeit, phony) |
| immoral(wrong, corrupt, dishonest, unprincipled, unfaithful) |
| incontinent(adjective, false, untrue, disloyal, cheating) |