| apt(adjective, good, smooth, sharp, smart) |
| cerebral(adjective, reasonable, rational, intelligent, thoughtful) |
| gifted(adjective, smart, bright, intelligent, skilled) |
| highbrow(adjective, smart, bright, rational, intelligent) |
| perceptive(adjective, understanding, cool, smooth, keen) |
| sapient(adjective, knowledge, experience, skill, intelligent) |
| thoughtful(adjective, reasonable, keen, heavy, deep) |
| acute(adjective, understanding, smooth, keen, sharp) |
| alert(adjective, keen, sharp, smart, bright) |
| canny(adjective, cool, smooth, keen, sharp) |
| discerning(adjective, understanding, cool, smooth, keen) |
| perspicacious(adjective, keen, sharp, smart, intelligent) |
| able(adjective, good, keen, sharp, smart) |
| capable(adjective, knowledge, experience, skill, intelligent) |
| cute(adjective, understanding, sharp, smart, bright) |
| judicious(adjective, understanding, cool, smooth, keen) |
| learned(adjective, smooth, knowledge, smart, experience) |
| ruminative(adjective, reasonable, rational, thoughtful, sober) |
| sage(adjective, understanding, cool, keen, sharp) |
| sensible(adjective, understanding, cool, smooth, keen) |