| 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: | acute |
| Part of Speech: | adjective |
| Definition: | deeply perceptive |
Synonyms: |
astute, canny, clever, discerning, discriminating, incisive, ingenious, insightful, intense, intuitive, judicious, keen, observant, penetrating, perspicacious, piercing, quick-witted, sensitive, sharp, smart, subtle |
| Notes: | acute is used for a sudden onset and short duration; chronic is for conditions that are slow to develop and of long duration acute is an angle of less than 90 degrees; obtuse is one of more than 90 degrees chronic is contrasted with acute as chronic pain persists over a longer period of time than acute pain and is resistant to most medical treatments |
Antonyms: |
dense, imperceptive, insensitive, obtuse, slow, stupid |
| Main Entry: | astute |
| Part of Speech: | adjective |
| Definition: | perceptive |
Synonyms: |
adroit, brainy, bright, calculating, canny, clever, crafty, discerning, foxy, insightful, intelligent, keen, knowing, not born yesterday, on the ball, perspicacious, quick on the uptake, sagacious, savvy, sharp, sharp as a tack, shrewd, sly |
Antonyms: |
asinine, idiotic, ignorant, imbecile, obtuse, shallow, stupid, thick, unintelligent |
| Main Entry: | canny |
| Part of Speech: | adjective |
| Definition: | clever, artful |
Synonyms: |
able, acute, adroit, astute, cagey, careful, cautious, circumspect, cunning, dexterous, discreet, foxy*, frugal, having fancy footwork, hep, ingenious, intelligent, judicious, knowing, nimble-witted, perspicacious, prudent, quick, quick-witted, sagacious, shrewd, skillful, slick, slippery*, sly, smart, smooth*, street smart, streetwise, subtle, wary, watchful, wise, with it, worldly-wise |
Antonyms: |
foolish, inept, silly |
| Main Entry: | discerning |
| Part of Speech: | adjective |
| Definition: | discriminating |
Synonyms: |
acute, astute, bright, brilliant, clear-sighted, clever, critical, gnostic, ingenious, insighted, insightful, intelligent, judicious, knowing, knowledgeable, penetrating, perceptive, percipient, perspicacious, piercing, sagacious, sage, sensitive, sharp, shrewd, subtle, wise |
Antonyms: |
disregardful, neglectful, negligent, overlooking, undiscerning, undiscriminating |
| Main Entry: | eagle-eyed |
| Part of Speech: | adjective |
| Definition: | keen-eyed |
Synonyms: |
X-ray eye, clear-sighted, hawk-eyed, observant, perceptive, perspicacious, sharp-eyed |
| Main Entry: | incisive |
| Part of Speech: | adjective |
| Definition: | intelligent |
Synonyms: |
acute, bright, clever, concise, keen, penetrating, perspicacious, piercing, profound, sharp, trenchant |
Antonyms: |
incompetent, stupid |
| Main Entry: | intelligent |
| Part of Speech: | adjective |
| Definition: | very smart |
Synonyms: |
able, acute, alert, alive, all there, apt, astute, brainy, bright, brilliant, calculating, capable, clever, comprehending, creative, deep*, discerning, enlightened, exceptional, highbrow, imaginative, ingenious, instructed, inventive, keen, knowing, knowledgeable, original, penetrating, perceptive, perspicacious, profound, quick, quick-witted, rational, ready, reasonable, resourceful, responsible, sage, sharp, smart, thinking, together*, understanding, well-informed, whiz*, wise, witty |
Antonyms: |
foolish, idiotic, imbecile, stupid, unintelligent |
| Main Entry: | judicious |
| Part of Speech: | adjective |
| Definition: | wise, thoughtful |
Synonyms: |
accurate, acute, astute, calculating, careful, cautious, circumspect, clear-sighted, considerate, considered, diplomatic, discerning, discreet, discriminating, efficacious, enlightened, expedient, far-sighted, informed, judicial, keen, perceptive, perspicacious, politic, profound, prudent, quick-witted, rational, reasonable, sagacious, sage, sane, sapient, seasonable, seemly, sensible, sharp, shrewd, skillful, sober, sophisticated, sound, thorough, wary, well-advised, well-judged, worldly-wise |
Antonyms: |
foolish, hasty, idiotic, injudicious, irrational, nonsensical, reckless, senseless, thoughtless, unwise |
| Main Entry: | keen |
| Part of Speech: | adjective |
| Definition: | intelligent |
Synonyms: |
Einstein, astute, bright, brilliant, canny, clever, discerning, discriminating, nobody's fool, perceptive, perspicacious, quick, sagacious, sapient, sensitive, sharp, sharp as a tack, shrewd, whiz, wise |
Antonyms: |
idiotic, ignorant, obtuse, stupid |