| brilliant(adjective, sharp, sensitive, piercing, astute) |
| certain(perceptive, observant, insightful) |
| clear-sighted(adjective, sharp, sensitive, piercing, astute) |
| cognizant(perceptive, observant, insightful) |
| conscious(adjective, understanding, keen, alert, sensitive) |
| conversant(perceptive, observant, insightful) |
| critical(adjective, sharp, sensitive, piercing, astute) |
| discerning(adjective, understanding, keen, sharp, alert) |
| discriminating(adjective, sharp, sensitive, piercing, astute) |
| felt(perceptive, observant, insightful) |
| hep to(expression, perceptive, observant, insightful) |
| in on(expression, perceptive, observant, insightful) |
| in right mind(expression, idiom, perceptive, observant, insightful) |
| informed(perceptive, observant, insightful) |
| ingenious(adjective, sharp, sensitive, piercing, astute) |
| keen(adjective, understanding, alert, sensitive, perceptive) |
| known(perceptive, observant, insightful) |
| mindful(perceptive, observant, insightful) |
| noticing(perceptive, observant, insightful) |
| noting(perceptive, observant, insightful) |