| qualified(adjective, tough, smart, bright, significant) |
| sensitive(adjective, understanding, sharp, smart, intelligent) |
| shady(adjective, dishonest, deceitful, dubious, suspicious) |
| skilled(adjective, tough, smart, bright, deep) |
| snaky(adjective, cunning) |
| sound(adjective, hard, reasonable, sharp, smart) |
| subtile |
| tactical(adjective, sensible, wise, practical, prudent) |
| thoughtful(adjective, sound, sharp, sensible, deep) |
| tricksy |
| underhanded(adjective, sly) |
| watchful(adjective, careful, prudent, clever, subtle) |
| calculated |
| capable(adjective, tough, smart, bright, intelligent) |
| circumspect(adjective, careful, wise, prudent, clever) |
| collusive |
| conscious(adjective, understanding, reasonable, sharp, smart) |
| contriving(adjective, dishonest, cunning, dubious, suspicious) |
| crisp |
| efficient(adjective, effective, adept) |