| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | bright |
| Synonyms: | acute, astute, clever, discriminating, intelligent, quick-witted, smart |
| Main Entry: | penetrating |
| Part of Speech: | adjective |
| Definition: | intelligent |
| Synonyms: | acute, astute, critical, discerning, discriminating, incisive, keen, penetrative, perceptive, perspicacious, profound, quick, quick-witted, sagacious, searching, sharp, sharp-witted, shrewd |
| Antonyms: | idiotic, senseless, stupid, unintelligent |
| Main Entry: | perspicacious |
| Part of Speech: | adjective |
| Definition: | observant, perceptive |
| Synonyms: | acute, alert, astute, aware, clear-sighted, clever, discerning, heady, judicious, keen, penetrating, percipient, sagacious, savvy*, sharp, sharp-witted, shrewd |
| Antonyms: | ignorant, unobservant, unperceptive |
| Main Entry: | quick-witted |
| Part of Speech: | adjective |
| Definition: | smart |
| Synonyms: | acute, agile, alert, apt, astute, brainy, bright, brilliant, canny, clever, facetious, humorous, intelligent, keen, knowing, nimble-witted, on the ball, penetrating, penetrative, perceptive, prompt, quick, quick on the draw, quick on the uptake, ready, savvy*, sharp, sharp as a tack, sharp-sighted, sharp-witted, shrewd, slick*, whiz*, wired, wise, witty |
| Antonyms: | slow, slow-witted, stupid, uneducated |