| umbrageous(adjective, light, cool, shade, informal) |
| infamous(adjective, vile, shameful, suspicious, dishonorable) |
| unscrupulous(adjective, bad, wrong, false, corrupt) |
| untrustworthy(adjective, false, corrupt, uncertain, dishonest) |
| vague(adjective, dull, obscure, dark, gloomy) |
| louche(adjective, disreputable) |
| notorious |
| tricky(adjective, false, corrupt, dishonest, immoral) |
| corrupt(adjective, bad, wrong, false, vicious) |
| devious(adjective, corrupt, dishonest, immoral, cunning) |
| queer(adjective, unusual, strange, odd, dubious) |
| slippery(adjective, bad, wrong, false, dishonest) |
| underhand(adjective, bad, wrong, false, corrupt) |
| blue(adjective, dull, dark, gloomy, dirty) |
| clouded(adjective, dull, dark, gloomy, uncertain) |
| fly-by-night(adjective, bad, wrong, uncertain, dishonest) |
| foul(adjective, dirty, corrupt, dishonest, raw) |
| fraudulent(adjective, fake, false, counterfeit, corrupt) |
| funny(adjective, unusual, strange, dubious, suspect) |
| overcast(adjective, dull, obscure, dark, gloomy) |