| attentive(adjective, understanding, reasonable, keen, sensible) |
| clairvoyant(adjective, wise, shrewd, acute, psychic) |
| comprehending(verb, correct, bright, alert, intelligent) |
| crafty(adjective, smooth, keen, sharp, smart) |
| cunning(adjective, good, sound, smooth, keen) |
| cute(adjective, understanding, sharp, smart, bright) |
| differentiating(verb, discriminating) |
| distinguishing(verb, discriminating) |
| eclectic(adjective, sharp, refined, critical, astute) |
| erudite(adjective, smart, sensible, familiar, deep) |
| far-sighted(adjective, sound, reasonable, sensible, rational) |
| finicky(adjective, severe, sharp, harsh, precise) |
| fussy(adjective, severe, sharp, harsh, refined) |
| informed(adjective, understanding, sound, reasonable, keen) |
| learned(sound, sharp, familiar, deep, intelligent) |
| luminous |
| picky(adjective, sharp, precise, refined, critical) |
| piercing(adjective, sharp, smart, sensitive, intelligent) |
| realizing(noun, verb, understanding, attention, hope) |
| sharp-witted(adjective, sharp, smart, bright, wise) |