Etymology and origin of the Latin word adaperio
- Confidence
- Established
- Formation
- Derivation
- First attested
- 116–27 BC, Varro
- Ultimate origin
- Latin (aperiō)
Forms
adaperiō (present infinitive adaperīre, perfect active adaperuī, supine adapertum); fourth conjugation[1]
Etymology
It is from Latin ad- + aperiō (“to open, uncover”).[2][1][3] Lewis and Short take the prefix as intensive.[4] De Vaan traces the simple verb to Proto-Italic *ap-wer-je- (“to open”), from Proto-Indo-European *h₂(e)p (“off”) and *h₂u̯er-i(e/o)- (“to cover”); its opposite is operiō “to cover”.[5]
Earliest recorded meaning
The OLD's earliest example is in Varro, who lists among the signs of fever in animals an open mouth with moist breath (adapertum ōs).[2][3][6]
Semantic evolution
It means to open wide, as a door, gate or mouth, and Lewis and Short note that Cicero does not use it.[2][4] Livy has attackers fall on gates thrown open and a tunnel opened up;[2][4] Seneca opens a book;[2][4] Curtius speaks of a king's ears opened to the slanders of the envious.[2][4] In medical writing it was used of loosening the bowels and of opening a vein,[2] and it could mean to uncover or bare, as the head, or to reveal to view and to knowledge.[2][7]
Timeline
- 116–27 BC – Varro uses it of the open mouth of a feverish animal.[2][8]
- 59 BC–17 AD – Livy uses it of gates and of a mine broken open.[2][4][8]
- 14–37 AD – Celsus uses it in medical senses.[2][8]
- 4 BC–65 AD – Seneca uses it of opening a book.[2][8]
- c. 45–96 AD – Statius uses it of the truth being revealed.[2][8]
Meanings
Verb
- To open wide, throw open (a door, the mouth); to unroll a book.[2][4]
- (figurative) To open (the ears) to information.[2]
- To break open;[2] (medicine) to loosen (the bowels).[2]
- To make by opening, open up (a vein).[2]
- To uncover, bare, expose to view; to reveal.[2][7]
Word family
- adapertilis
- adapertiō
- sēmiadapertus
- adapertus
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 n o p q r s Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
- ^ a b c d e f g Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
- ^ a b 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
Cite this entry
“Adaperio.” Etymologically, 20 Oct. 2026, etymologically.com/la/adaperio. Accessed 21 Oct. 2026.
Last edited on . ·