Etymologically

Etymology and origin of the Ancient Greek word θέρος

Confidence
Established
Formation
Inherited
First attested
700s BC Homer, Iliad
Inherited from
Proto-Hellenic *kʷʰéros
Ultimate origin
Proto-Indo-European *gʷʰéros

Pronunciation

  • 5th-century BC Attic: /tʰé.ros/[1]
  • 4th-century AD Koine: /ˈθe.ros/[1]
  • 10th-century Byzantine: /ˈθe.ros/[1]

Forms

θέρος (théros) n (genitive θέρους or θέρεος or θέρευς); third declension[1]

Etymology

It is inherited from Proto-Hellenic *kʷʰéros (“heat; summer”),[1] inherited from Proto-Indo-European *gʷʰéros (“heat, warm weather”), an s-stem noun of the root Proto-Indo-European *gʷʰer- (“warm, hot”).[1][2][3] It is the noun that belongs to the old present θέρομαι (théromai, “to become warm”).[4][2]

It corresponds exactly to Sanskrit हरस् (háras, “heat”), and to Old Armenian ջեր (ǰer, “warmth”).[2] Only Greek has the meaning “summer”: Beekes and Chantraine note that for “heat” Greek used other words (θέρμη (thérmē), θάλπος (thálpos)), and the sense “harvest” may come from θερίζω (therízō), “to do the summer work”.[2][4][5]

The Etymologicum Magnum derives it from θέρω (thérō, “to warm”), which it in turn derives from θέω (théō, “to run”).[6]

Earliest recorded meaning

In Homer it means “summer”, as in the Odyssey (7.118) “neither in winter nor in summer” and the Iliad (22.151), with the old dative θέρεϊ.[7][8][9]

Semantic evolution

Summer was sometimes set against winter alone, so that it took in spring and autumn as well.[10] In Thucydides it is the campaigning season.[7] From summer it came to mean the summer fruits, the harvest or crop (Aristophanes, Demosthenes), a polysemy also recorded in DatSemShift.[7][10][11] Aristophanes has “to reap another man's harvest” (θέρος ἀλλότριον ἀμᾶν), and Aeschylus, Sophocles and Euripides used the word figuratively for a crop of men, a shorn mane, or the reaping of a crime.[7][10] The Atticist lexica note that the orators used it for the crops gathered in, and Hesychius glosses it as corn and as the season of reaping.[12][13]

The New Testament uses it for summer, and the Shepherd of Hermas figuratively for the bliss to come.[14] Medieval Greek kept it as a learned word.[15] In Modern Greek the neuter θέρος (théros) is a learned word for summer, while a popular masculine ο θέρος, its gender changed after ο τρύγος “grape harvest”, means the reaping of grain and its season, as in the saying θέρος, τρύγος, πόλεμος, of work that cannot be put off.[16][17]

Timeline

  • Homer – The Iliad and the Odyssey use it for summer.[7][8]
  • Before the 6th century BC – Hesiod uses the genitive θέρεος, “in summer”.[7][9][18]
  • 5th century BC – Thucydides uses it for the campaigning season.[7][18]
  • 5th–4th century BC – Aristophanes uses it for the harvest.[7][10][18]
  • 1st century AD – The New Testament uses it for summer.[14]
  • 3rd century AD – Papyri use the plural θέρη for crops.[7]
  • Modern Greek – The neuter is a learned word for summer, and a popular masculine means the reaping of grain.[16][17]

Meanings

Noun

  1. Summer, the warm season; in Thucydides, the campaigning season.[7][10][14]
  2. The summer fruits, harvest, crop, and in the plural crops.[7][10]
  3. (figurative) A crop (of men); a shorn mane or beard; the harvest of a deed.[10]

Word family

  • θερινός (therinós)
  • θέρειος (théreios)
  • θερεία (thereía)
  • θερίζω (therízō)
  • θερισμός (therismós)
  • θεριστής (theristḗs)
  • θέρετρον (théretron)
  • θέρομαι (théromai)
  • θερμός (thermós)
  • θέρμη (thérmē)
  • Modern Greek θέρος (théros)

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d 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. ^ Wodtko, Dagmar S.; Irslinger, Britta; Schneider, Carolin (2008), Nomina im indogermanischen Lexikon, Heidelberg: Winter
  4. ^ a b Chantraine, Pierre (2009), Dictionnaire étymologique de la langue grecque: histoire des mots, new ed. with a supplement (Chroniques d'étymologie grecque 1–10), Paris: Klincksieck
  5. ^ Babiniotis, Georgios (2010), Ετυμολογικό λεξικό της νέας ελληνικής γλώσσας [Etymological Dictionary of Modern Greek], Athens: Κέντρο Λεξικολογίας
  6. ^ Gaisford, Thomas, ed. (1848), Etymologicum Magnum, Oxford: Oxford University Press
  7. ^ a b c d e f g h i j k Liddell, Henry George; Scott, Robert; Jones, Henry Stuart (1940), A Greek-English Lexicon, 9th ed., Oxford: Clarendon Press
  8. ^ a b Cunliffe, Richard John (1924), A Lexicon of the Homeric Dialect, London: Blackie and Son
  9. ^ a b Keersmaekers, Alek (2021–2025), GLAUx: The Greek Language Automated corpus, https://github.com/alekkeersmaekers/glaux
  10. ^ a b c d e f g Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
  11. ^ Zalizniak, Anna A., et al. (2024), Database of Semantic Shifts (DatSemShift), Moscow: Institute of Linguistics, Russian Academy of Sciences, https://datsemshift.ru
  12. ^ Lexica Segueriana, in Immanuel Bekker, ed. (1814), Anecdota Graeca I, Berlin: Nauck
  13. ^ Hesychius of Alexandria, Lexicon, ed. Kurt Latte (Α–Ο, Copenhagen 1953–1966) and Moritz Schmidt (Π–Ω, Jena 1858–1868)
  14. ^ a b c 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
  15. ^ Kriaras, Emmanuel, Επιτομή του Λεξικού της μεσαιωνικής ελληνικής δημώδους γραμματείας 1100–1669, Κέντρο Ελληνικής Γλώσσας, https://www.greek-language.gr
  16. ^ a b Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki
  17. ^ a b Πάπυρος–Larousse–Britannica, Μέγα Λεξικό της Ελληνικής Γλώσσας, Athens: Πάπυρος
  18. ^ a b c Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge

Related etymologies

Cite this entry

“Θέρος.” Etymologically, 1 Nov. 2026, etymologically.com/grc/%CE%B8%CE%AD%CF%81%CE%BF%CF%82. Accessed 2 Nov. 2026.

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