| perceptive(adjective, understanding, cool, keen, sharp) |
| perspicacious(adjective, understanding, keen, sharp, sensitive) |
| discerning(adjective, understanding, cool, keen, sharp) |
| acute(adjective, understanding, keen, sharp, sensitive) |
| penetrating(adjective, understanding, sharp, sensitive, wise) |
| astute(adjective, understanding, cool, keen, sharp) |
| keen(adjective, understanding, sharp, sensible, certain) |
| intelligent(adjective, cool, sound, sharp, sensible) |
| sharp(adjective, understanding, cool, keen, significant) |
| shrewd(adjective, sharp, significant, sensitive, wise) |
| smart(adjective, cool, significant, intelligent, brilliant) |
| wise(adjective, understanding, cool, sound, keen) |
| sensible(adjective, understanding, cool, sound, keen) |
| aware(adjective, understanding, cool, keen, sharp) |
| canny(adjective, cool, smart, crack, significant) |
| clever(adjective, cool, sharp, significant, sensitive) |
| discriminating(adjective, sharp, sensitive, intellectual, mental) |
| judicious(adjective, understanding, cool, sound, keen) |
| sagacious(adjective, understanding, cool, keen, sharp) |
| incisive(adjective, understanding, keen, sharp, sensitive) |