This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Acuteness of vision or perception; keenness.

n. Sharpness or acuteness, as of a needle, wit, etc.

n. Sharpness or acuteness, as of a needle, wit, etc.

n. Sharpness; acuteness.

n. a quick and penetrating intelligence

n. sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)

"Terry Pratchett, who has early-onset Alzheimer's (and whose mental acuity is still fine) has written a stirring editorial on the need to legalize suicide in the UK."

acuteness    acuition    acutance    acute   

ambiguity    annuity    congruity    continuity    ingenuity    promiscuity   

gustatory    image    disorientation    cue    xdsl    ataxia    sensitivity    salience    percept    neuropathy