Etymologically

Etymology and origin of the Ancient Greek word ἠθικός

Confidence
Established
Formation
Derivation
First attested
300s BC Aristotle
Ultimate origin
Ancient Greek ἦθος
Etymology tree
inherited borrowed derived
Ancient Greek ἦθος
Ancient Greek ἠθικός
Latin ethicus

Pronunciation

  • 5th-century BC Attic: /ɛː.tʰi.kós/[1]
  • 4th-century AD Koine: /i.θiˈkos/[1]
  • 10th-century Byzantine: /i.θiˈkos/[1]

Forms

ἠθῐκός (ēthikós) m (feminine ἠθῐκή, neuter ἠθῐκόν); first/second declension[1]

Etymology

It is formed from Ancient Greek ἦθος (êthos, “character, moral nature”) + -ικός (-ikós).[1][2][3][4] The noun differs from ἔθος (éthos, “custom, habit”) only in its long vowel, and both may go back to Proto-Indo-European *swedʰ- (“custom”), though Beekes marks this as doubtful.[5]

Aristotle wrote that moral virtue is the product of habit and takes its name, with a slight change, from the word for habit.[6]

Earliest recorded meaning

It is first found in Aristotle, in the 4th century BC, who uses it often.[7][4] He calls moral virtue “ethical” in contrast to intellectual virtue, and speeches “ethical” when they express the speaker's character.[3][2]

Semantic evolution

Aristotle also used it in criticism of the arts: the Odyssey is a poem of character, the Iliad one of passion, and some musical modes, painters and sculptors are “ethical”, expressing character, while the aulos is not.[3][2] His work on morals was called Ethics.[3][2]

Later philosophy made the ethical part of philosophy one of its three branches, beside the physical and the dialectical, as in Diogenes Laertius, and Strabo speaks of moral philosophy.[3] Philo uses the feminine alone for ethics.[3] Plutarch uses it for tact, and its adverb of a smile full of expression.[3]

English ethic comes through Old French and Late Latin from the phrase for moral philosophy, and ethics also echoes the title of Aristotle's work.[8] The word lived on in medieval Greek, and Modern Greek ηθικός (ithikós) is learned, with its modern sense shaped by French moral; the noun ηθικό (ithikó) “morale” is a calque on French.[9][10][4]

Timeline

  • 4th century BC – Aristotle contrasts moral with intellectual virtue and calls the Odyssey a poem of character.[3][2][11]
  • 1st century BC to 1st century AD – Strabo speaks of moral philosophy.[3][11]
  • 1st–2nd century AD – Plutarch uses it of tact, and its adverb of an expressive smile.[3][11]
  • 3rd century AD – Diogenes Laertius names ethics as one part of philosophy, beside physics and dialectic.[3][11]
  • Modern Greek – The learned ηθικός (ithikós) means “moral”, with its sense shaped by French usage.[10][4]

Meanings

Adjective

  1. Moral, relating to moral character, as opposed to intellectual.[3][2]
  2. Concerning ethics: in the neuter plural a treatise on morals, in the feminine ethics itself.[3][2]
  3. Showing or expressing character, of speech, poetry, music, painting and sculpture.[3][2]
  4. Of music: having a good moral influence.[2]
  5. Tactful.[3]

Word family

  • ἠθικῶς (ēthikôs)

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
  3. ^ a b c d e f g h i j k l m n o Liddell, Henry George; Scott, Robert; Jones, Henry Stuart (1940), A Greek-English Lexicon, 9th ed., Oxford: Clarendon Press
  4. ^ a b c d Babiniotis, Georgios (2010), Ετυμολογικό λεξικό της νέας ελληνικής γλώσσας [Etymological Dictionary of Modern Greek], Athens: Κέντρο Λεξικολογίας
  5. ^ Beekes, Robert S. P. (2010), Etymological Dictionary of Greek, with the assistance of Lucien van Beek, Leiden Indo-European Etymological Dictionary Series 10, Leiden; Boston: Brill
  6. ^ Etygram: ancient etymologies of Greek words, CEPAM, Université Côte d'Azur, http://appsweb-cepam.unice.fr/etygram
  7. ^ Keersmaekers, Alek (2021–2025), GLAUx: The Greek Language Automated corpus, https://github.com/alekkeersmaekers/glaux
  8. ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  9. ^ Kriaras, Emmanuel, Επιτομή του Λεξικού της μεσαιωνικής ελληνικής δημώδους γραμματείας 1100–1669, Κέντρο Ελληνικής Γλώσσας, https://www.greek-language.gr
  10. ^ a b Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki
  11. ^ a b c d Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge

Borrowed into

Cite this entry

“Ἠθικός.” Etymologically, 1 Nov. 2026, etymologically.com/grc/%E1%BC%A0%CE%B8%CE%B9%CE%BA%CF%8C%CF%82. Accessed 2 Nov. 2026.

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