Etymologically

Etymology and origin of the Latin word asilus

Confidence
Uncertain
Formation
Borrowing
First attested
c. 100–45 BC Nigidius Figulus More words from the 1st century BC
From
Etruscan

Pronunciation

  • Classical: [aˈsiː.ɫʊs][1]
  • Ecclesiastical: [aˈs̬iː.lus][1]

Forms

asīlus m (genitive asīlī); second declension[1]

Etymology

The origin is unknown.[2][1][3] The OLD suggests it is perhaps Etruscan,[4] and Köbler also mentions Etruscan as possible.[5] De Vaan reasons that the /s/ between vowels points to an older cluster such as ⟨ss⟩ or ⟨ts⟩, after which a long vowel would be expected, so that the word is probably a borrowing, while Ancient Greek οἶστρος (oîstros, “gadfly”) is not similar enough in form to be connected.[2] Wiktionary objects that ⟨asīlus⟩ could be the regular outcome of a form with ⟨ss⟩ under the rule seen in pusillus and ofella.[1]

Earliest recorded meaning

The first record is in Nigidius Figulus, quoted in the Servian commentary on Virgil, who describes the asilus as a many-coloured fly, the tabanus, most harmful to cattle.[4][3][2]

Semantic evolution

Virgil, in the Georgics, calls asilus the Roman name of the fly that the Greeks called oestrus.[4][6] Seneca already treats the word as old-fashioned, and the usual word was tabanus.[6] Pliny the Elder notes the sting in its mouth.[4] Georges notes that it lives on in Italian asillo.[7]

Timeline

  • c. 100–45 BC – Nigidius Figulus describes the asilus as a fly harmful to cattle.[4][5]
  • 70–19 BC – Virgil gives asilus as the Roman name of the Greek oestrus.[4][5]
  • 4 BC–65 AD – Seneca discusses the word as one that has gone out of use.[6][5]
  • 23/24–79 AD – Pliny the Elder describes its sting.[4][5]

Meanings

Noun

  1. A gadfly, horsefly.[4][6]

Usage notes

The Greek glossaries render it with Ancient Greek οἶστρος (oîstros) and Ancient Greek μύωψ (múōps).[8]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  3. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c d e f g h Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  5. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  7. ^ Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  8. ^ Goetz, Georg (1888–1923), Corpus glossariorum Latinorum, Leipzig: Teubner; vols. VI–VII Thesaurus glossarum emendatarum, digital ed. CGLO, Munich: Bayerische Akademie der Wissenschaften

Related etymologies

Cite this entry

“Asilus.” Etymologically, 13 Nov. 2026, etymologically.com/la/asilus. Accessed 14 Nov. 2026.

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