Definition of acuity in US English:



  • Sharpness or keenness of thought, vision, or hearing.

    ‘intellectual acuity’
    ‘visual acuity’
    • ‘Even the most peripheral characters are portrayed with acuity.’
    • ‘It begins with observation, with reporting, rendering the facts of our inner and outer reality with acuity sharpened by imagination.’
    • ‘The Cardinal has diagnosed our ills with characteristic acuity.’
    • ‘Among the still photographs shown were several that also tested perceptual acuity.’
    • ‘In any case, sensitivity and acuity on the part of her editors should have meant the deletion of the worst of the inaccurate and offensive references, or the rejection of the piece as a whole.’
    • ‘Although their hearing thus lacks acuity, anatomical studies suggest that their vomeronasal and olfactory systems are well developed.’
    • ‘Usually, the lower back is weak and sore, there is ringing in the ears and loss of hearing acuity, the face is ashen or dark, especially under the eyes.’
    • ‘His vitality, acuity and integrity remain intact.’
    • ‘The acuity of hearing and vision may deteriorate.’
    • ‘Nothing is more important to the development of acuity in visual thought than drawing.’
    • ‘New research by psychologists in the United States argues that ordinary social contact is at least as useful as more formal intellectual activities in preserving mental acuity.’
    • ‘We must engage visual, hearing and speaking acuity.’
    • ‘I have a hearing loss that limits my hearing acuity and comprehension to less than 50 per cent.’
    • ‘Tinnitus is a common symptom of noise overexposure, and it further interferes with hearing acuity, sleep and concentration.’
    • ‘Here though, I'm uncertain whether Boshoff's chosen subject matter is able to carry both his intellectual acuity and visual dexterity.’
    • ‘Columnist for Vanity Fair and for brain-boggling US journal The Nation, Hitchens has a fierce reputation for intellectual and political acuity.’
    • ‘One of the authors treated an otherwise healthy 30-year old female with poor acuity, impaired night vision, and myopia.’
    • ‘But what is not as widely known is that diabetes also causes cognitive decline, from a subtle loss of mental acuity to a heightened risk for Alzheimer's disease.’
    • ‘Students were chosen on the basis of interest, intellectual acuity, career field, and career patterns.’
    • ‘Visual acuity is an important element of good vision, but not the only element.’
    insight, discernment, perception, perceptiveness, intelligence, sharp-wittedness, quick-wittedness, cleverness, smartness, incisiveness, keenness, sharpness, trenchancy, astuteness, shrewdness, acuteness, subtlety, clarity, discrimination, sensitivity, thoughtfulness, profundity, percipience, perspicacity, perspicuity, sagacity
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Late Middle English: from Old French acuite or medieval Latin acuitas, from Latin acuere ‘sharpen’ (see acute).