Etymology and origin of the Latin word assertio
- Confidence
- Established
- Formation
- Derivation
- First attested
- c. 35–96 Quintilian More words from the 1st century
- Ultimate origin
- Latin asserō
Etymology tree
From the same root
Forms
assertiō f (genitive assertiōnis); third declension[1] Also spelled adsertiō.[2][3]
Etymology
It is formed from Latin asserō + -tiō, from the verb meaning “to lay claim to (a person as free or slave)”.[2][3][1] The verb is a compound of serō2 (“to join”),[4] which goes back to Proto-Italic *sere/o- and Proto-Indo-European *ser-e/o- (“to thread, tie together”).[4]
Earliest recorded meaning
Quintilian (c. 35–95/96 AD)[5] is the first the OLD cites: it was a legal term for the formal claim that a person was free or a slave, in a suit over civil status.[2][3]
Semantic evolution
The legal sense appears in Quintilian, in a letter of Trajan among those of Pliny the Younger, and in Suetonius, who speaks of perfusoriae adsertiones, unwarranted declarations of freedom.[3][2] The declamations ascribed to Quintilian use it for the defence of a person's character.[2] In Late Latin it came to mean an assertion or declaration (Arnobius, Sidonius),[3][6] and the Theodosian Code uses it for admitting someone to an order.[6]
Medieval Latin used it for an assertion, a declaration or a doctrine,[7] for the vindication of a cause and for corroboration;[8] it also had legal senses of a claim and of an allegation made before a judge.[9] English borrowed it in the early 15th century, from Old French or directly from Late Latin.[10]
Timeline
- c. 35–95/96 AD – Quintilian uses it for the legal claim of a person's status.[2][5]
- c. 75–c. 150 AD – Suetonius speaks of unwarranted declarations of freedom.[3][5]
- 297–310 AD – Arnobius uses it for an assertion in general.[3][5]
- early 15th century – English borrows it as assertion.[10]
- 1521 – Henry VIII publishes his Assertio septem sacramentorum.[8]
Meanings
Noun
- (law) The formal claim that a person is free or a slave, in a suit over civil status.[2][3]
- The defence or vindication of a person's character.[2]
- (Late Latin) Admission (of someone) to an order or body.[6]
- (Late Latin) An assertion, declaration.[3][6][11]
- (Medieval Latin) A doctrine or teaching.[7]
- (Medieval Latin) Corroboration, confirmation.[8][9]
Related words
- English assertion
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 f g h i Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ a b 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
- ^ a b c d Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
- ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
- ^ a b c Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press
- ^ a b Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
- ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
- ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
Borrowed into
- English assertion
Cite this entry
“Assertio.” Etymologically, 7 Nov. 2026, etymologically.com/la/assertio. Accessed 8 Nov. 2026.
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