| sensitive(adjective, understanding, keen, sharp, smart) |
| smart(adjective, understanding, cool, sound, smooth) |
| penetrating(adjective, understanding, reasonable, keen, sharp) |
| knowledgeable(adjective, understanding, cool, sound, keen) |
| quick-witted(adjective, cool, keen, sharp, smart) |
| sensible(adjective, clear, understanding, cool, sound) |
| bright(adjective, cool, keen, sharp, smart) |
| canny(adjective, cool, smooth, reasonable, keen) |
| knowing(verb, adjective, understanding, sound, smooth) |
| understanding(noun, verb, adjective, sound, keen) |
| refined(adjective, sharp, superior, sophisticated, critical) |
| tactful(adjective, sensible, sensitive, intelligent, cautious) |
| alert(adjective, understanding, keen, sharp, smart) |
| brilliant(adjective, good, cool, sharp, smart) |
| circumspect(adjective, sound, reasonable, sensible, rational) |
| deep(adjective, keen, sharp, smart, bright) |
| rational(adjective, clear, understanding, sound, reasonable) |
| selective(adjective, sharp, sensitive, refined, critical) |
| thoughtful(adjective, sound, reasonable, sharp, smart) |
| delicate(adjective, superior, sensitive, sophisticated, advanced) |