| lubricious(adjective, honest, underhand) |
| lying(adjective, false, dishonest, cunning, deceitful) |
| machiavellian |
| mendacious(adjective, false, dishonest, cunning, deceitful) |
| nefarious |
| private(adjective, secret, hidden, clandestine, underground) |
| privy |
| reptilian |
| slinking(secret, private, hidden, covert, secretive) |
| subtle(mean, smooth, false, misleading, sly) |
| undependable(adjective, false, dishonest, deceitful, unreliable) |
| under-the-counter(sly, fraudulent) |
| under-the-table(secret, private, hidden, clandestine, underground) |
| unprincipled(adjective, bad, wrong, false, dishonest) |
| vile(adjective, low, corrupt, dishonest, shameful) |
| villainous(adjective, false, deceitful, lying, untruthful) |
| wrong(adjective, immoral, unprincipled) |
| acute |
| ambiguous(false, shaky, unlikely, misleading, rambling) |
| ancillary(ambiguous, rambling, incidental, circuitous, tortuous) |