Synonyms and Antonyms of astute
- a police detective known to be an astute judge of character
artful, cagey (also cagy), crafty, cunning, devious, dodgy [chiefly British], foxy, guileful, pawky [chiefly British], slick, sly, subtle, tricky, wily
discerning, insightful, perceptive, percipient, perspicacious, sagacious, sage, sapient, wise
discriminating, discriminative
agile, alert, brainy, bright, brilliant, clever, intelligent, keen, nimble, quick, quick-witted, sharp-eyed, sharp-sighted
artless, guileless, ingenuous, innocent, naive (or naïve)
exploitable, gullible (also gullable)
airheaded, birdbrained, brain-dead, brainless, dim-witted, dopey (also dopy), dumb, empty-headed, feebleminded, gormless [chiefly British], half-witted, knuckleheaded, lamebrain (or lamebrained), lunkheaded, simple, slow, slow-witted, softheaded, stupid, thickheaded, thick-witted, unintelligent, weak-minded
foolish, idiotic (also idiotical), imbecile (or imbecilic), moronic, silly, thoughtless, witless