Etymology and origin of the Latin word coaequo
- Confidence
- Established
- Formation
- Derivation
- First attested
- 234–149 BC, Cato
- Ultimate origin
- Latin (aequus)
Etymology tree
Forms
coaequō (present infinitive coaequāre, perfect active coaequāvī, supine coaequātum); first conjugation[1]
Etymology
It is from Latin con- + aequō (“to make level, make equal”).[2][1][3] De Vaan derives aequō from the adjective aequus (“level, equal”), probably from a form ⟨*aikwos⟩, for which he finds no convincing etymology.[4]
Earliest recorded meaning
The TLL dates it from Cato,[5] who uses it in the De agricultura of levelling a threshing floor.[6][7][8]
Semantic evolution
In its literal sense it is used of levelling ground: Sallust has montēs coaequāre, to level mountains, Columella of levelling clods and furrows, and an inscription of levelling a small shrine.[2][6][9] Figuratively it means to put on the same level or treat as equal: Cicero uses it of treating everything alike, and the second letter to Caesar attributed to Sallust of making everyone's favour equal.[2][9] A public law uses it of adjusting measures by the official weights.[2] In Augustine it means to compare, and Stelten gives the Church Latin senses “make equal, fill up, rank with”.[9][10] Medieval writers used it of levelling a forest and of demolishing, of smoothing, and of dividing equally, and also in mathematics and music.[11]
Timeline
- 234–149 BC – Cato uses it of levelling a threshing floor.[6][8]
- 86–34 BC – Sallust uses it of levelling mountains.[2][9][8]
- 81–43 BC – Cicero uses it of treating everything alike.[9][8]
- 354–430 AD – Augustine uses it of comparing.[9][8]
Meanings
Verb
- To make level, to level.[2][6]
- To regard or treat as equal, to equate.[2][9]
- To adjust by weighing.[2]
- (Late Latin) To compare.[9]
- (Medieval Latin) To level to the ground, demolish; to divide equally; to make smooth.[11]
References
- ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ Bianchi, Rossella; Lelli, Olga (2014), VOLI: Vocabolario di latino, Florence: Le Monnier
- ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
- ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
- ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b c d e f g h Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
- ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
- ^ a b Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
Cite this entry
“Coaequo.” Etymologically, 20 Oct. 2026, etymologically.com/la/coaequo. Accessed 20 Oct. 2026.
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