| perceptive(adjective, clear, understanding, cool, sound) |
| perspicacious(adjective, understanding, sound, reasonable, keen) |
| intelligent(adjective, clear, understanding, cool, sound) |
| discriminating(verb, adjective, clear, sound, reasonable) |
| prudent(adjective, action, sound, reasonable, keen) |
| clever(adjective, cool, sound, smooth, keen) |
| shrewd(adjective, understanding, sound, smooth, reasonable) |
| astute(adjective, understanding, cool, sound, smooth) |
| sagacious(adjective, understanding, cool, sound, smooth) |
| wise(adjective, clear, understanding, cool, sound) |
| acute(adjective, understanding, smooth, keen, sharp) |
| keen(adjective, understanding, smooth, sharp, smart) |
| sharp(adjective, understanding, cool, sound, smooth) |
| percipient(adjective, understanding, cool, keen, sharp) |
| discreet(adjective, understanding, reasonable, keen, sharp) |
| judicious(adjective, clear, understanding, cool, sound) |
| critical(adjective, severe, sharp, harsh, value) |
| insightful(adjective, understanding, cool, sound, keen) |
| quick(adjective, understanding, cool, keen, sharp) |
| sage(adjective, understanding, cool, sound, reasonable) |