| not born yesterday(expression, idiom, smart, shrewd, perceptive) |
| omniscient(smart, familiar, intelligent, brilliant, knowledgeable) |
| on the ball(expression, adjective, idiom, smooth, keen) |
| piercing(sharp, smart, intelligent, clever, astute) |
| psychical(adjective, rational, intellect, intellectual, supernatural) |
| reasoning(adjective, reasonable, keen, heavy, rational) |
| resourceful(adjective, smart, bright, intelligent) |
| slick(adjective, cool, smooth, keen, sharp) |
| smooth(adjective, keen, sharp, smart, clean) |
| studious(adjective, reasonable, rational, intelligent, thoughtful) |
| versed(adjective, smooth, smart, clean, familiar) |
| veteran(adjective, smart, familiar, knowledgeable, practical) |
| vivid |
| witty(adjective, smart, bright, intelligent, clever) |
| absorbed(adjective, reasonable, keen, deep, rational) |
| abstruse(knowledgeable, cultured, educated, erudite, enlightened) |
| ace(expert, skilled, capable, skillful, adroit) |
| aesthetic(adjective, perceptive, observant, insightful) |
| alive to(verb, expression, phrasal verb, perceptive, observant) |
| analytical(adjective, reasonable, keen, deep, rational) |