Etymologically

ἰδέα

Etymology and origin of the Ancient Greek word ἰδέα

Confidence
Established
Formation
Derivation
First attested
6th century BC, Theognis
Ultimate origin
Ancient Greek (ἰδεῖν)
Etymology tree
inherited borrowed derived
Ancient Greek ἰδέα
Latin idea
English idea

Pronunciation

  • IPA (5th-century BC Attic): /i.dé.aː/[1]
  • IPA (4th-century AD Koine): /iˈðe.a/[1]
  • IPA (10th-century Byzantine): /iˈðe.a/[1]

Forms

ῐ̓δέᾱ (idéā) f (genitive ῐ̓δέᾱς); first declension[1]

Etymology

It is a verbal abstract from ἰδεῖν (ideîn, “to see”), formed like ἀλέα (aléā, “warmth of the sun”).[2][3] It goes back to the Indo-European root Proto-Indo-European *weyd- (“to see”) and is closely related to εἶδος (eîdos).[2][1]

Earliest recorded meaning

Its first recorded uses are in the 6th century BC: Theognis has the plural for outward appearances that deceive the mind, and Pindar uses it for a person's beauty of form.[4][5][6]

Semantic evolution

Herodotus used it for appearance and for kind or sort, and Thucydides for the nature of an epidemic or a war and for a way of attacking a city.[5][7] Isocrates and Aristotle used it for literary form, and Democritus is reported to have called his atoms “indivisible forms”.[7][5] In Plato it is the idea of something, and above all the Forms, the ideal patterns opposed to particular things, and Aristotle discusses them under this name.[7][2]

In the New Testament it is outward appearance: the angel's “appearance was like lightning” (Matthew 28:3).[5][8] Latin borrowed it as idea, and through Latin it reached Russian and other languages.[1] Modern Greek ιδέα kept the ancient senses as a learned word; its sense “idea, notion” is a semantic loan from French idée and German Idee.[9]

Timeline

  • 6th century BC – Theognis and Pindar use it for appearance.[4][6]
  • 5th century BC – Herodotus uses it for kind or sort;[5] Thucydides for the nature of a plague.[5][7][6]
  • 5th–4th century BC – Plato uses it for the Forms.[7][6]
  • 4th century BC – Aristotle uses it for literary form.[7][6]
  • 1st century AD – Matthew uses it for an angel's appearance.[8]

Meanings

Noun

  1. Appearance, form, especially of a beautiful body.[5][7]
  2. Mere appearance, semblance.[5][7]
  3. Shape, configuration.[7]
  4. Nature, kind, sort; a way of doing something.[5][7]
  5. Literary form, arrangement.[7]
  6. (philosophy) The idea of a thing; a Platonic Form.[7]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c 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
  3. ^ Frisk, Hjalmar (1960–1972), Griechisches etymologisches Wörterbuch, 3 vols, Heidelberg: Carl Winter
  4. ^ a b Keersmaekers, Alek (2021–2025), GLAUx: The Greek Language Automated corpus, https://github.com/alekkeersmaekers/glaux
  5. ^ a b c d e f g h i Liddell, Henry George; Scott, Robert; Jones, Henry Stuart (1940), A Greek-English Lexicon, 9th ed., Oxford: Clarendon Press
  6. ^ a b c d e Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge
  7. ^ a b c d e f g h i j k l Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
  8. ^ a b Bauer, Walter; Danker, Frederick W., et al. (2000), A Greek-English Lexicon of the New Testament and Other Early Christian Literature, 3rd ed., Chicago: University of Chicago Press
  9. ^ Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki

Borrowed into

Cite this entry

“Ἰδέα.” Etymologically, 17 Oct. 2026, etymologically.com/grc/%E1%BC%B0%CE%B4%CE%AD%CE%B1. Accessed 17 Oct. 2026.

Last edited on . ·