acuity
/əˈkjuːəti/ (bre, ipa) · /əˈkjuːəti/ (ame, ipa) · /ə-ˈkyü-ə-tē a-/ (ame, mw)
acuity — noun
1. the sharpness of a person's senses or mind — how precisely and clearly they can
the sharpness of a person's senses or mind — how precisely and clearly they can see, hear, or understand things.
After wearing his new glasses, Wei was surprised by the acuity of his vision.
acuity of + sensory domain: vision
The audiologist tested Ananya's hearing acuity with a series of quiet tones.
hearing acuity — noun + sensory domain collocation
Kwame solved the puzzle in three minutes, showing impressive mental acuity.
As people age, their visual acuity often decreases, making small print hard to read.
The hawk's remarkable visual acuity allows it to spot a mouse from high above.
- keenness
more emotive and informal; keenness of senses can sound like eagerness rather than precision
- sharpness
broader in application, covering physical edges as well as mental qualities; less specialised than acuity
- perceptiveness
focuses on understanding and insight rather than sensory sharpness; often used for interpersonal awareness
- dullness
the opposite of mental acuity; suggests slow or sluggish thinking
- blurriness
the opposite of visual acuity; describes unclear or unfocused sight
文法句型
adjective + acuity
acuity of + noun
用法筆記
Frequently paired with adjectives such as 'visual', 'hearing', 'mental', or 'intellectual' to specify which domain of sharpness is meant.