Etymologically

Etymology and origin of the Latin word ethicus

Confidence
Established
Formation
Borrowing
First attested
c. 55 BC–40 AD, Seneca the Elder
Borrowed from
Ancient Greek ἠθικός
Ultimate origin
Ancient Greek ἠθικός

Pronunciation

  • Classical: [ˈeː.tʰɪ.kʊs][1]
  • Ecclesiastical: [ˈɛː.ti.kus][1]

Forms

ēthicus (feminine ēthica, neuter ēthicum); first/second-declension adjective[1] Prudentius scans it with a short first syllable, ĕthĭcīs.[2][3] Late spellings include aethicus and eticus.[3]

Etymology

It is borrowed from Ancient Greek ἠθικός (ēthikós, “moral, expressing character”),[4][2] from ἦθος (êthos, “character, custom”).[1][5][6]

Earliest recorded meaning

It is found from Seneca the Elder on,[3] who reports that Naso seldom declaimed controversiae, and only those that portrayed character (non nisi ethicas).[4][7]

Semantic evolution

The sense “portraying character” belonged to rhetoric; in the sense “moral, belonging to ethics” Gellius uses res ethica for moral philosophy,[2][8][9] and Quintilian has it in a passage where it is a conjecture.[4] The adverb ēthicōs (“in a way that expresses character”) is in Seneca the Elder.[2][8] It occurs only once in poetry.[3] Glossaries explain ethica as moral teaching about conduct.[3]

In medieval Latin it meant concerned with moral philosophy,[10][11] and as a noun a moral philosopher, especially Aristotle, or a classical author quoted for his moral sayings, as John of Salisbury calls Horace and Cicero.[10] The feminine ethica passed through Old French into English as ethic.[6]

Timeline

  • c. 55 BC–40 AD – Seneca the Elder uses it of declamations that portray character.[4][3][5]
  • c. 35–95/96 AD – Quintilian is credited with it by conjecture in the sense “moral”.[4][5]
  • c. 165 AD – Gellius calls moral philosophy res ethica.[2][9][5]
  • c. 431–486 AD – Sidonius Apollinaris writes of dictio ethica, diction that shows character.[2][5]
  • c. 1160 – John of Salisbury uses ethicus as a noun for a moralist.[10][5]
  • late 14th century – English borrows the noun ethik, moral philosophy, through Old French.[6]

Meanings

Adjective

  1. Belonging to morals, ethical.[4][2][11]
  2. (rhetoric) Portraying character, psychological.[4][7]

Noun

  1. (Medieval Latin) A moral philosopher;[10] Aristotle; a classical author quoted on morals.[10]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  3. ^ a b c d e f 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 Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  5. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  7. ^ a b Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  8. ^ a b Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  9. ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  10. ^ a b c d e 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
  11. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson

Related etymologies

Cite this entry

“Ethicus.” Etymologically, 24 Oct. 2026, etymologically.com/la/ethicus. Accessed 24 Oct. 2026.

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