Open English Wordnet
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Nouns
(n)
acuity
,
visual acuity
,
sharp-sightedness
sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)
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(n)
acuteness
,
acuity
,
sharpness
,
keenness
a quick and penetrating intelligence
“he argued with great acuteness”
,
“I admired the keenness of his mind”
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