| intelligent(adjective, smooth, keen, sharp, smart) |
| plotting(adjective, mean, smooth, cunning, knowing) |
| furtive(adjective, mean, smooth, dishonest) |
| smart(adjective, mean, smooth, keen, sharp) |
| cagey(adjective, mean, smooth, keen, sharp) |
| deceptive(adjective, mean, smooth, false, dishonest) |
| acute(adjective, smooth, keen, sharp, smart) |
| serpentine(adjective, false, cunning, misleading) |
| arch(adjective, mean, smooth, cunning, knowing) |
| experienced(adjective, smooth, keen, sharp, sensitive) |
| keen(adjective, smooth, sharp, smart, bright) |
| stealthy(adjective, mean, smooth, false, cunning) |
| streetwise(adjective, smooth, keen, sharp, smart) |
| dissembling(adjective, mean, smooth, cunning, knowing) |
| traitorous(adjective, mean, smooth, cunning, knowing) |
| clandestine(adjective, false, secret, artful) |
| cloak-and-dagger(hidden, fraudulent) |
| closet(hidden, fraudulent) |
| covert(mean, smooth, cunning, knowing) |
| delusory(false, deceitful, misleading, artful) |