acuity

Definition

Sharpness or acuteness, as of a needle, wit, etc.

Etymology

From Middle English acuite, acuyte, from Middle French acuité, from Medieval Latin acuitas, irreg., from Latin acuō (“sharpen”).

Example Sentences

• "The old woman with dementia lost her mental acuity."
• "And yet [Ray] Dalio’s acuity prompts an awkward question: how much of Bridgewater’s success comes not from the way it is organized, or any notion of “radical transparency,” but from the boss’s raw investment abilities?"
• "Donald Trump’s frequently bizarre public appearances[…] have once again raised questions about his mental acuity, experts say. […] During his presidency, Joe Biden was subjected to intense speculation over his mental acuity – including from Trump."

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