| capable(adjective, smart, bright, intelligent, quick) |
| cognizant(adjective, understanding, cool, sound, reasonable) |
| deft(adjective, keen, sharp, smart, bright) |
| foresighted(adjective, sound, sharp, sensible, intelligent) |
| gifted(adjective, smart, bright, ready, intelligent) |
| good(smart, bright, intelligent) |
| informed(adjective, sound, reasonable, sharp, sensible) |
| intellectual(adjective, smart, bright, intelligent, brainy) |
| on the ball(expression, adjective, idiom, smooth, keen) |
| opportunistic(subtle, tactful, suave) |
| piercing(sharp, smart, sensitive, intelligent, shrewd) |
| ready(adjective, keen, sharp, smart, bright) |
| realistic(adjective, hard, sound, tough, reasonable) |
| reasonable(adjective, hard, sound, smart, bright) |
| shifty(adjective, mean, smooth, sharp, cunning) |
| thoughtful(adjective, kind, sound, reasonable, sharp) |
| underhand(adjective, mean, smooth, sharp, smart) |
| vulpine(adjective, cunning) |
| witty(adjective, smart, bright, sensible, intelligent) |
| devious(adjective, smooth, sharp, sensitive, cunning) |