When you hear 'acuity' are you hearing English or French?

'Acuity' is a word borrowed from French 'acuité'. The word entered the English language some time around 1543.

acuity [noun] [1543]

Keenness of perception

See 'acuity' on the Loan Words Map

See more loan words from French.

Etymology: Middle English 'acuite' acridity, from Middle French 'acuité' from Medieval Latin 'acuitat-, acuitas' from Latin 'acuere'

See more loan words from 1500s.