| sharp(adjective, understanding, strong, hard, cool) |
| piercing(noun, verb, adjective, strong, cool) |
| keen(adjective, understanding, strong, cool, severe) |
| acute(adjective, understanding, strong, keen, sharp) |
| incisive(adjective, understanding, strong, hard, keen) |
| intelligent(adjective, understanding, keen, sharp, smart) |
| perceptive(adjective, understanding, strong, keen, sharp) |
| discerning(adjective, understanding, reasonable, keen, sharp) |
| perspicacious(adjective, sharp, sensitive, intelligent, perceptive) |
| shrewd(adjective, understanding, sharp, smart, sensitive) |
| cutting(verb, adjective, strong, hard, cool) |
| discriminating(adjective, sharp, alert, intelligent, perceptive) |
| deep(adjective, strong, slight, keen, sharp) |
| biting(verb, adjective, strong, hard, cool) |
| profound(adjective, strong, slight, keen, sharp) |
| trenchant(adjective, strong, keen, sharp, intense) |
| astute(adjective, understanding, keen, sharp, smart) |
| percipient(adjective, understanding, sharp, sensitive, wise) |
| shrill(adjective, strong, sharp, harsh, intense) |
| critical(adjective, severe, sharp, harsh, sensitive) |