Someone or something described as astute has or shows an ability to notice and understand things clearly. In other words, they are mentally sharp or clever. Astute can also describe someone who is crafty or wily.

// They made some astute observations about the movie industry.

// Astute readers will notice the error.

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“Geraldine and Claire were out walking their dog, Daisy. They felt as though Daisy was very astute at reacting to their mood, rather than reflecting it.” — Robbie Meredith, BBC, 4 Dec. 2024

Road Runner always bests Wile E. Coyote in the famous Looney Tunes cartoon series, but both characters help demonstrate meanings of the word astute. Astute comes from the Latin adjective astutus, meaning “cunning, crafty, or clever,” which in turn comes from the noun astus, meaning “craft.” The English adjective, accordingly, can describe both the crafty and the wily. It’s easy to see how this applies to Wile E. Coyote: in each episode, Road Runner races along the highways of the American Southwest while the coyote sets an elaborate trap for the bird, usually with the aid of some goofy product ordered from the fictitious Acme company. But alas, Road Runner is astute, as in “mentally sharp or clever.” In other words, he is not only quick on his feet, but quick on the uptake. He usually catches wind of the schemes, which ultimately backfire due to either the products’ chronic unreliability or Coyote’s own ineptitude. Road Runner, never captured or damaged, responds with a characteristic “Beep! Beep!” and runs off.