| ingenious |
| iniquitous(adjective, dishonest, immoral, rotten, untrustworthy) |
| intriguing |
| knavish(adjective, false, dishonest, immoral, cunning) |
| low-down |
| lurking |
| malevolent(adjective, mean, bad, evil, base) |
| malicious(adjective, mean, bad, evil, base) |
| masked(secret, hidden, clandestine, underground, sneaky) |
| mean(adjective, bad, evil, low, base) |
| misleading(adjective, mean, bad, false, dishonest) |
| mysterious(clandestine, underground, undisclosed) |
| mythomaniac(adjective, mean, bad, evil, base) |
| not kosher |
| on the QT(expression, idiom, dishonest, cunning, deceitful) |
| on the take(expression, adjective, idiom, dishonest, immoral) |
| open(adjective, dishonest, immoral, rotten, untrustworthy) |
| padded(adjective, dishonest, immoral, rotten, untrustworthy) |
| perjured(adjective, mean, bad, evil, base) |
| profiteering(adjective, dishonest, immoral, rotten, untrustworthy) |