noun

acuity

acuity, sharpness, keenness

His visual acuity was remarkable for his age.

His visual acuity was remarkable for his age.

She possesses great intellectual acuity.

She possesses great intellectual acuity.

((of sth.)) sharpness of thought, vision, or hearing His visual acuity was remarkable.

Synonyms: sharpness, keenness; Antonyms: dullness, obtuseness

From Latin 'acuere' (to sharpen), from the root 'acu' meaning 'sharp'.

Think of an 'acute' angle, which is very sharp. Acuity is the quality of being sharp.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.