acuity
Americannoun
noun
-
keenness or acuteness, esp in vision or thought
-
the capacity of the eye to see fine detail, measured by determining the finest detail that can just be detected
Other Word Forms
Derived Forms
Etymology
Origin of acuity
First recorded in 1375–1425; late Middle English acuite, from Old French, from Medieval Latin, Late Latin acuitās, equivalent to Latin acu(ere) to sharpen or acū ( tus ) sharpened ( see acute) + -itās -ity
Explanation
Acuity has to do with sharpness and smartness. Do you always get top grades in math? Then you have an acuity for numbers. People often talk about "mental acuity" which is a fancy way of saying intelligence, brains, or smartness. There are specific kinds of acuity, too. As people become very old, they tend to lose their acuity in many areas, including their vision, which is one reason very old people don't drive as well. A 40-year-old quarterback isn't going to have the same acuity for seeing receivers and throwing the ball as a 25-year-old quarterback.
Vocabulary lists containing acuity
Vocabulary from "Stop Expecting Games to Build Empathy" by Julie Muncy
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Unbroken
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"Coming to Our Senses," Vocabulary from the science essay
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
But in the next line, his contemporary Menander asserts that though it may rob us of our vitality, time nevertheless “adds to our acuity of mind.”
From The Wall Street Journal • Jun. 8, 2026
FDA documents describe it as a prescription device intended to improve visual acuity in patients with certain forms of dry AMD and without center involving geographic atrophy or neovascular maculopathy.
From Science Daily • May 27, 2026
“While these pressures are not new, they are becoming harder to absorb as patient needs grow more complex, driven by an aging population, higher acuity, and shifting patient expectations.”
From MarketWatch • Mar. 13, 2026
I just think when you have a lot of quick sketching acuity, word gets out.
From Los Angeles Times • Dec. 22, 2025
Studies in mental acuity, history, and the chemistry of poisons—as well as daily entries in their apprentice journals.
From "Scythe" by Neal Shusterman
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
