Etymologically

ἐνεργός

Etymology and origin of the Ancient Greek word ἐνεργός

Confidence
Established
Formation
Compound
First attested
400s BC Herodotus
Ultimate origin
Ancient Greek ἐν,ἔργον
Etymology tree
inherited borrowed derived
Ancient Greek ἐν
Ancient Greek ἐνεργός
Derivations
From the same root
Ancient Greek ἔμπεδος ← ἐν
Ancient Greek ἔνθεος ← ἐν
English ellipsis ← ἐν
English empathy ← ἐν
English parenthesis ← ἐν

Pronunciation

  • 5th-century BC Attic: /e.ner.ɡós/[1]
  • 4th-century AD Koine: /e.nerˈɣos/[1]
  • 10th-century Byzantine: /e.nerˈɣos/[1]

Forms

ἐνεργός (energós) m or f (neuter ἐνεργόν); second declension[1]

Etymology

It is formed from Ancient Greek ἐν (en, “in”) + ἔργον (érgon, “work”) + -ος (-os), “at work”, like συνεργός (sunergós) and εὐεργός (euergós).[1][2][3]

Earliest recorded meaning

Herodotus and Thucydides first use it, in the 5th century BC: Herodotus of men who need a living and want to be busy, Thucydides of ships fit for service.[4][5][6]

Semantic evolution

In classical prose the word meant active and busy, of people at work or on duty: Plato would not let pilots or judges drink wine while on duty.[4][5] Of things it meant effective or in working order, and Xenophon applies it to land that is tilled and productive, the opposite of ἀργός (argós), and to mines in operation.[4][2] Money that was ἐνεργός was capital put out to earn a return, as in Demosthenes.[4][2] Polybius speaks of a vigorous attack and of effective javelins.[4] According to the New Pauly, Aristotle formed from it the abstract noun ἐνέργεια (enérgeia), his term for actuality as opposed to potential.[7]

Papyri of the 3rd century BC use it of people who have work, and the Septuagint of the working days of the week.[5][8] Coptic borrowed it.[9] Modern Greek ενεργός (energós) is a learned revival of the ancient word: active, of people and of participation, and in geology of an active volcano.[10] It forms compounds such as ραδιενεργός (radienergós, “radioactive”).[3]

Timeline

  • 5th century BC – Herodotus uses it for people who want to be busy, and Thucydides for ships fit for service.[4][5]
  • 5th–4th century BC – Xenophon uses it for productive land and working mines.[4]
  • 4th century BC – Demosthenes uses it for capital earning a return, and Aristotle for the most effective arguments.[4][2]
  • 3rd century BC – Papyri use it for people who have work, and the Septuagint for working days.[5][8]
  • 2nd century BC – Polybius uses it for a vigorous attack and effective weapons.[4]
  • 1st century AD – Papyri use it for a mill in working order.[4]
  • Modern Greek – The learned word ενεργός (energós) means active.[10]

Meanings

Adjective

  1. At work, active, busy; having work or business.[4][5]
  2. On duty, of officials or workers.[4][5]
  3. effective, fit for service, of ships, troops or weapons; vigorous, of an attack or a march.[4][5]
  4. Of land, productive or tilled; of mines or mills, in working order.[4][2]
  5. Of money, earning a return; τὰ ἐνεργά: employed capital.[4]
  6. (philosophy) actual, as opposed to potential.[4]

Word family

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e Κέντρο Ελληνικής Γλώσσας, Βασικό Λεξικό της Αρχαίας Ελληνικής, Portal for the Greek Language, https://www.greek-language.gr
  3. ^ a b Babiniotis, Georgios (2010), Ετυμολογικό λεξικό της νέας ελληνικής γλώσσας [Etymological Dictionary of Modern Greek], Athens: Κέντρο Λεξικολογίας
  4. ^ a b c d e f g h i j k l m n o p Liddell, Henry George; Scott, Robert; Jones, Henry Stuart (1940), A Greek-English Lexicon, 9th ed., Oxford: Clarendon Press
  5. ^ a b c d e f g h Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge
  6. ^ Keersmaekers, Alek (2021–2025), GLAUx: The Greek Language Automated corpus, https://github.com/alekkeersmaekers/glaux
  7. ^ Cancik, Hubert; Schneider, Helmuth, eds. (2002–2010), Brill's New Pauly: Encyclopaedia of the Ancient World, Leiden: Brill
  8. ^ a b Lust, Johan; Eynikel, Erik; Hauspie, Katrin (2003), Greek-English Lexicon of the Septuagint, rev. ed., Stuttgart: Deutsche Bibelgesellschaft
  9. ^ Database and Dictionary of Greek Loanwords in Coptic (DDGLC), Freie Universität Berlin and Universität Leipzig
  10. ^ a b Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki

Derived terms

Cite this entry

“Ἐνεργός.” Etymologically, 1 Nov. 2026, etymologically.com/grc/%E1%BC%90%CE%BD%CE%B5%CF%81%CE%B3%CF%8C%CF%82. Accessed 2 Nov. 2026.

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