Etymology and origin of the Latin word mutuo
- Confidence
- Established
- Formation
- Derivation
- First attested
- 81–43 BC, Cicero
- Ultimate origin
- Latin mūtuus
From the same root
Forms
mūtuō (not comparable)[1]
Etymology
It is from Latin mūtuus (“reciprocal, borrowed”) + -ō, an adverb from the ablative of the adjective.[2][1][3] De Vaan traces mūtuus to Proto-Italic *moito- (“(object of) exchange”), whose further origin is disputed.[4]
Earliest recorded meaning
Köbler and Georges find it first in Cicero,[5][3] who has it of the tides of the sea, coming in and going out by turns.[3]
Semantic evolution
It appears in the letters to Cicero from Lepidus and Plancus, of mutual zeal and goodwill and of returning another's affection.[2][6] Quintus Curtius uses it in the sense of jointly or alike,[2] and Suetonius and Apuleius have it of exchanged services and mutual accusations.[7] Döderlein distinguishes it from invicem: both mean reciprocally, but invicem refers rather to actions done in turn and mūtuō to mutual states.[8]
Ecclesiastical Latin uses it for mutually, to one another, in return.[9]
Timeline
- 81–43 BC – Cicero uses it of the tides.[3][5]
- 1st century AD – Quintus Curtius uses it in the sense of jointly.[2][5]
- c. 75–c. 150 AD – Suetonius uses it of exchanged services.[7][5]
Meanings
Adverb
Related words
Usage notes
The OLD and the dictionaries list beside it a verb mūtuō “to borrow”, an active form of mūtuor found in Caecilius and in Pliny the Elder, who has the moon shine with light borrowed from the sun.[2][3][7]
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
- ^ a b c d e Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
- ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
- ^ a b c Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
- ^ Döderlein, Ludwig (1874), Döderlein’s Hand-book of Latin Synonymes, tr. H. H. Arnold, Andover: W. F. Draper
- ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
- ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
Cite this entry
“Mutuo.” Etymologically, 21 Oct. 2026, etymologically.com/la/mutuo. Accessed 22 Oct. 2026.
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