| cogent(adjective, clear, sound, reasonable, sensible) |
| conscious(adjective, understanding, cool, sound, reasonable) |
| heavy(adjective, deep, thoughtful, weighty, reflective) |
| higher-order(adjective, characteristic, intelligence, smartness) |
| instructed(adjective, smart, characteristic, bright, familiar) |
| intuitive(adjective, characteristic, intelligence, smartness) |
| plausible(adjective, clear, sound, reasonable, sensible) |
| practical(adjective, sound, reasonable, sensible, familiar) |
| quick on the uptake(expression, characteristic, intelligence, smartness) |
| reflective(adjective, sound, reasonable, sharp, smart) |
| skillful(adjective, good, cool, knowledge, keen) |
| sparkling(adjective, keen, bright, funny, amusing) |
| subtle(adjective, reasonable, sharp, sensible, shrewd) |
| thoughtful(adjective, sound, reasonable, sharp, smart) |
| worldly(adjective, cool, significant, familiar, brilliant) |
| reasoned(adjective, sound, reasonable, sensible, rational) |
| tricky(adjective, sharp, smart, cunning, deceitful) |
| active(adjective, keen, sharp, smart, bright) |
| attentive(adjective, reasonable, sharp, bright, sensible) |
| au fait(expression, adjective, keen, smart, familiar) |