acuity

as in sensitivity
the state or quality of being able to sense slight impressions or differences a worrisome deterioration in the acuity of his hearing over the years

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“Acuity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/acuity. Accessed 18 Mar. 2024.

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