| clever(adjective, keen, sharp, ability, smart) |
| intelligent(adjective, mind, bright, alert, quickness) |
| shrewd(adjective, keen, sharp, smart, bright) |
| quick(adjective, keen, ability, smart, bright) |
| quick-witted(adjective, keen, sharp, ability, smart) |
| bright(adjective, keen, ability, smart, intelligent) |
| smart(adjective, keen, sharp, ability, bright) |
| keen(adjective, keen, sharp, ability, smart) |
| acute(adjective, keen, sharp, smart, bright) |
| astute(adjective, keen, sharp, smart, bright) |
| agile(adjective, smart, alert, intelligent, brilliant) |
| alert(adjective, keen, ability, smart, intelligent) |
| sassy |
| savvy(adjective, keen, sharp, smart, bright) |
| swift |
| brainy(adjective, sharp, smart, intelligent, clever) |
| brilliant(smart, intelligent, clever) |
| canny(sharp, smart, bright, intelligent, clever) |
| penetrating(sharp, smart, intelligent, brilliant, wise) |
| perceptive(adjective, keen, sharp, smart, bright) |