| perceptive(adjective, understanding, cool, sound, keen) |
| astute(adjective, understanding, cool, sound, keen) |
| intelligent(adjective, understanding, cool, sound, keen) |
| discerning(adjective, understanding, cool, sound, keen) |
| wise(adjective, understanding, cool, sound, reasonable) |
| sagacious(adjective, understanding, cool, sound, keen) |
| sharp(adjective, understanding, cool, sound, keen) |
| knowledgeable(adjective, understanding, cool, sound, smooth) |
| aware(adjective, understanding, cool, sound, keen) |
| sage(adjective, understanding, cool, sound, keen) |
| clever(adjective, cool, sound, keen, sharp) |
| judicious(adjective, understanding, cool, sound, keen) |
| percipient(adjective, understanding, cool, keen, sharp) |
| sensible(adjective, understanding, cool, sound, smooth) |
| smart(adjective, understanding, cool, sound, sharp) |
| canny(adjective, cool, smooth, keen, sharp) |
| conscious(adjective, understanding, cool, keen, sharp) |
| quick(adjective, understanding, cool, keen, sharp) |
| quick-witted(adjective, cool, sharp, smart, significant) |
| brainy(adjective, understanding, cool, keen, sharp) |