Etymology and origin of the Ancient Greek word ἀεί
- Confidence
- Established
- Formation
- Inherited
- First attested
- 700s BC Homer, Iliad More words from the 8th century BC
- Inherited from
- Proto-Hellenic *aiweí
- Ultimate origin
- Proto-Indo-European *h₂ei-u-
Pronunciation
Forms
ᾱ̆̓εί (āeí) [1] Homeric and Ionic αἰεί (aieí), epic αἰέν (aién), Doric αἰές (aiés), Aeolic ἄι (ái).[2][3] Inscriptions of Cyprus, Locris and Phocis keep the digamma, ⟨αἰϝεί⟩.[3][4]
Etymology
It is inherited from Proto-Hellenic *aiweí,[1] from *αἰϝέσι (*aiwési), the locative of an s-stem meaning “lifetime”; without the ending the same stem gives Doric αἰές (aiés).[3][4] Beside it stood an n-stem, seen in epic αἰέν (aién) and in αἰών (aiṓn, “lifetime, eternity”).[3][4] Both are extensions of a u-stem from Proto-Indo-European *h₂ei-u- (“lifetime, vital force”).[3][1][5] The Attic form is the one that lost the ⟨ι⟩ of αἰεί (aieí).[4][5]
Cognate with Latin aevum (“age, lifetime”), Gothic 𐌰𐌹𐍅𐍃 (aiws, “age, time”) and a Sanskrit neuter meaning “lifetime”.[3][4]
Earliest recorded meaning
Homer uses αἰεί and αἰέν, “always, for ever”, often with words of duration such as “unceasingly”, and the Attic form also occurs three times in Homer.[6][4][7]
Semantic evolution
Besides “for ever, continually”, from the time of Aeschylus it meant “at any given moment”: ὁ ἀεὶ βασιλεύων in Herodotus is “the king of the day”, and ὁ ἀεὶ χρόνος is eternity.[2][6] With the article it named the immortals, οἱ ἀεὶ ὄντες, in Xenophon.[6]
In the New Testament the Second Letter to the Corinthians speaks of those who are “always rejoicing”.[8] From it came ἀΐδιος (aḯdios, “eternal”) and εἰσαεί (eisaeí, “for ever”).[4][1]
Modern Greek keeps αεί (aeí) as a learned word, and as the prefix αει- in compounds such as αειπάρθενος “ever-virgin”.[9][5]
Timeline
- Homer – The Iliad and the Odyssey use αἰεί and αἰέν for “always”.[6][10]
- 5th century BC – Herodotus calls the king of the day ὁ αἰεὶ βασιλεύων.[6]
- 4th century BC – Plato uses it in phrases such as “always, every day”.[6]
- 1st century AD – The Second Letter to the Corinthians speaks of being always joyful.[8]
- Modern Greek – The word survives as a learned adverb and the prefix αει- (aei-).[9][5]
Meanings
Adverb
- Always, for ever.[2][6]
- Continually, all the time.[2]
- At any given time, in each case: “whoever is in power at the moment”.[2][6]
- (with the article) Eternal: ὁ ἀεὶ χρόνος “eternity”, οἱ ἀεὶ ὄντες “the immortals”.[6]
Word family
- εἰσαεί (eisaeí)
- ἀΐδιος (āḯdios)
Related words
References
- ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
- ^ a b c d e f 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
- ^ a b c d e f g Frisk, Hjalmar (1960–1972), Griechisches etymologisches Wörterbuch, 3 vols, Heidelberg: Carl Winter
- ^ a b c d Babiniotis, Georgios (2010), Ετυμολογικό λεξικό της νέας ελληνικής γλώσσας [Etymological Dictionary of Modern Greek], Athens: Κέντρο Λεξικολογίας
- ^ 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
- ^ Cunliffe, Richard John (1924), A Lexicon of the Homeric Dialect, London: Blackie and Son
- ^ 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
- ^ a b Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki
- ^ Keersmaekers, Alek (2021–2025), GLAUx: The Greek Language Automated corpus, https://github.com/alekkeersmaekers/glaux
Related etymologies
Cite this entry
“Ἀεί.” Etymologically, 13 Nov. 2026, etymologically.com/grc/%E1%BC%80%CE%B5%CE%AF. Accessed 14 Nov. 2026.
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