Etymology and origin of the Ancient Greek word ἐνεργός
Derivations
From the same root
Pronunciation
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
- At work, active, busy; having work or business.[4][5]
- On duty, of officials or workers.[4][5]
- effective, fit for service, of ships, troops or weapons; vigorous, of an attack or a march.[4][5]
- Of land, productive or tilled; of mines or mills, in working order.[4][2]
- Of money, earning a return; τὰ ἐνεργά: employed capital.[4]
- (philosophy) actual, as opposed to potential.[4]
Word family
- ἐνέργεια (enérgeia)
Related words
References
- ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e Κέντρο Ελληνικής Γλώσσας, Βασικό Λεξικό της Αρχαίας Ελληνικής, Portal for the Greek Language, https://www.greek-language.gr
- ^ a b 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 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
- ^ 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
- ^ Keersmaekers, Alek (2021–2025), GLAUx: The Greek Language Automated corpus, https://github.com/alekkeersmaekers/glaux
- ^ Cancik, Hubert; Schneider, Helmuth, eds. (2002–2010), Brill's New Pauly: Encyclopaedia of the Ancient World, Leiden: Brill
- ^ a b Lust, Johan; Eynikel, Erik; Hauspie, Katrin (2003), Greek-English Lexicon of the Septuagint, rev. ed., Stuttgart: Deutsche Bibelgesellschaft
- ^ Database and Dictionary of Greek Loanwords in Coptic (DDGLC), Freie Universität Berlin and Universität Leipzig
- ^ 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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