acute (English)
Where does "acute" come from?
The word acute originates from the Proto-Indo-European root *h₂eḱ-, meaning 'sharp,' which evolved into the Latin word acūtus, meaning 'to sharpen' or 'needle.' By the Late Middle English period, the term migrated into English to describe both piercing sensations and sudden, short-lived fevers. Over time, its meaning expanded from physical sharpness to encompass quick mental perception, mathematical angles, and even musical pitches.
Full etymology tree
- acute (English), 'Brief, quick, short.'
- inherited acute (Middle English)
- borrowed acutus (Latin), 'sharpened, made sharp, sharp, having been sharpened'
- deverbal acuo (Latin), 'to make pointed, sharpen, whet'
- derived acus (Latin), 'a needle, a pin'
- inherited *h₂eḱus (Proto-Indo-European)
- derived *h₂eḱ- (Proto-Indo-European), 'sharp'
- derived acus (Latin), 'a needle, a pin'
- deverbal acuo (Latin), 'to make pointed, sharpen, whet'
- borrowed acutus (Latin), 'sharpened, made sharp, sharp, having been sharpened'
- inherited acute (Middle English)
Direct ancestors
Updated June 2026
Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris