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Definition of acuity
acuity
/əˈkjuː.ɪ.ti/
a · cu · i · ty
Adverb:acutely
•Plural:acuities
•Adjective:acute
acuity Lexical Profile
CEFR
C2
Grade
12
Tier
2
Usage
Rare
Syllables
4
acuity Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
Sharpness or keenness of thought, vision, or hearing.
Example
"Regular reading and puzzle-solving can help maintain mental acuity well into old age."
2
The level of severity of a patient's illness or medical condition, which determines the intensity of nursing or medical care required.
Example
"The emergency department adjusted its staffing ratios based on the high acuity of incoming patients."
Synonyms
View all synonyms for acuity Antonyms
View all antonyms for acuity• Rhymes for acuity
• Nearby Words
Word Origin & Etymology
Borrowed in the mid-16th century from Middle French acuité, from Medieval Latin acuitas ('sharpness'), derived from Latin acus ('needle') and acuere ('to sharpen').
Cite this Entry
Wordmom. (2026). Definition of Acuity. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/acuity