| understanding(adjective, smart, bright, alert, refined) |
| insightful(adjective, perceptive, sharp, smart, brilliant) |
| informed(adjective, sound, reasonable, knowledge, sharp) |
| percipient(adjective, cool, sound, sharp, sensible) |
| sharp-witted(adjective, mind, bright, quickness, possession) |
| alive(adjective, smart, alert, attentive, watchful) |
| genius(adjective, bright, informal, noun, characteristic) |
| reasoning(adjective, sound, reasonable, sensible, rational) |
| talented(adjective, good, smart, skilled, competent) |
| adroit(adjective, keen, sharp, smart, bright) |
| aware(adjective, understanding, cool, sound, reasonable) |
| capable(adjective, smart, knowledge, experience, skill) |
| ready(adjective, smart, sharp, bright, lively) |
| sane(adjective, sound, reasonable, sensible, rational) |
| sapient(adjective, sound, knowledge, sharp, smart) |
| well-informed(adjective, experienced, knowledge, smart, experience) |
| erudite(adjective, knowledge, experience, skill, expert) |
| discreet(adjective, reasonable, smart, sensible, skill) |
| precocious(adjective, sharp, smart, sensible, alert) |
| cerebral(adjective, intellectual, sensible, rational, practical) |