- Confidence
- Probable
- Formation
- Derivation
- First attested
- Terence
- Ultimate origin
- Proto-Indo-European (*h₂eḱ-)
Pronunciation
Forms
acuō (present infinitive acuere, perfect active acuī, supine acūtum); third conjugation[1]
Etymology
It is probably from an adjective Proto-Indo-European *h₂eḱus (“sharp”), from the root Proto-Indo-European *h₂eḱ- (“sharp”) of acus “needle” and ācer “sharp”.[1][2][3]
Earliest recorded meaning
The OLD's first citation is Terence, of rousing someone.[2] Köbler dates Terence 190–159 BC.[4]
Semantic evolution
It meant to sharpen to a point, whet, as Cicero's saw being sharpened and Livy's swords, to sharpen teeth or weapons for a fight, and of a boil to come to a head.[2][3][5] It meant to make sight or mind keener, of instruments shriller, to rouse, incite, as in Terence, and to intensify, as in the Rhetorica ad Herennium.[2] In grammar it meant to accent a syllable, as in Quintilian.[2]
In Ecclesiastical Latin it meant to sharpen, exercise.[6] English acute comes from its participle acūtus “sharp” in the late 14th century.[7]
Timeline
- 190–159 BC – Terence uses it of rousing.[2][4]
- 81–43 BC – Cicero uses it of sharpening.[2][4]
- c. 35–95/96 AD – Quintilian uses it of accenting.[2][4]
- late 14th century – English acute is recorded.[7]
Meanings
Verb
- To sharpen, whet.[2]
- To make keener; to make shriller.[2]
- To rouse, incite.[2]
- To intensify.[2]
- (grammar) To accent.[2]
Word family
- acūmen
- acūtātus
- acutus
- exacuō
- peracuō
- praeacuō
- acūtor
- acūtum
Related words
References
- ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i j k l m Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
- ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
- ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Derived terms
Cite this entry
“Acuo.” Etymologically, 16 Oct. 2026, etymologically.com/la/acuo. Accessed 16 Oct. 2026.
Last edited on . ·