| cagey(adjective, secret, sneaky, stealthy) |
| conniving(adjective, mean, smooth, dishonest, cunning) |
| conspiratorial(adjective, clandestine, underground, undisclosed, sneaky) |
| criminal(adjective, evil, corrupt, dishonest, shady) |
| deep(sharp, smart, intelligent, cunning, clever) |
| dirty(wrong, dishonest, immoral, deceitful, unprincipled) |
| dubious(adjective, evil, corrupt, dishonest, irregular) |
| evil |
| fishy(wrong, false, dishonest, immoral, deceitful) |
| implicit(adjective, secret, sneaky, stealthy, latency implication) |
| mean(adjective, smooth, dishonest, cunning, deceitful) |
| misleading(adjective, false, dishonest, cunning, deceitful) |
| on the sly(expression, idiom, secret, private, hidden) |
| privy |
| questionable(adjective, evil, corrupt, dishonest, irregular) |
| subtle(adjective, mean, smooth, false, cunning) |
| traitorous(adjective, mean, smooth, smart, false) |
| underhandedly |
| untruthful(adjective, false, corrupt, dishonest, cunning) |
| villainous(adjective, false, deceitful, lying, untruthful) |