Etymologically

Etymology and origin of the Ancient Greek word λεῖος

Confidence
Probable
Formation
Inherited
First attested
Homer, Iliad
Inherited from
Proto-Indo-European *leh₁y-u-
Ultimate origin
Proto-Indo-European *leh₁i-

Pronunciation

  • 5th-century BC Attic: /lêː.os/[1]
  • 4th-century AD Koine: /ˈli.os/[1]
  • 10th-century Byzantine: /ˈli.os/[1]

Forms

λεῖος (leîos) m (feminine λείᾱ, neuter λεῖον); first/second declension[1]

Etymology

It continues an older form with a digamma, *λεῖϝος (*leîwos), inherited from Proto-Indo-European *leh₁y-u- (“smooth”).[1][2] It is cognate with Latin lēvis (“smooth”), an i-stem that may have replaced an older u-stem.[2][3] Schrijver derived both from a u-stem Proto-Indo-European *leh₁i-u-, made thematic in Greek.[2][3] The same root is probably in λίς (lī́s, “smooth (of rock)”), λιτός (lītós, “plain”) and λείμαξ (leímax).[2][4]

Earliest recorded meaning

In the Iliad (4.484) it describes the smooth trunk of a poplar, and Homer often uses it of level ground, a racecourse, a field cleared of obstacles, or a place free of rocks.[5][6][7]

Semantic evolution

From smooth and level ground it was used of anything smooth to the touch: an eel in Aristophanes, a calm sea in Herodotus, worked marble and unembossed silver plate in inscriptions.[5][7] Of textiles it meant plain, not brocaded (Thucydides), and of people and animals smooth-skinned, hairless, beardless, and Aristotle calls man the smoothest of animals.[5][7] Figuratively it described soft words (Aeschylus), smooth sounds (Plato), a gentle breeze (Aristophanes), and for the Cyrenaics the “smooth movement” that is pleasure.[5][7]

Its derivatives include λειότης (leiótēs, “smoothness”) and the verb λειαίνω (leiaínō, “to smooth; grind fine”).[3][4] The Gospel of Luke, in a passage from Isaiah, uses it of a level road.[8]

Modern Greek has it as the learned Modern Greek λείος (líos), “smooth”, used in anatomy of smooth muscle fibres.[9]

Timeline

  • Homer – The Iliad and the Odyssey use it of smooth trunks and level ground.[5][6]
  • 5th century BC – Thucydides uses it of plain, unembroidered cloth.[5][7][10]
  • 4th century BC – Aristotle uses it of smooth-skinned animals and of a smooth shark.[5][10]
  • 1st century AD – The Gospel of Luke uses it of a level road.[8]
  • Modern Greek – It is used as Modern Greek λείος (líos), a learned word.[9]

Meanings

Adjective

  1. Smooth to the touch.[5][7]
  2. Of ground: level, even; free from (with the genitive).[5][7][6]
  3. Of cloth: plain, not embroidered; of stone or metal: unsculptured, unembossed.[5][7]
  4. Of people and animals: smooth-skinned, hairless, beardless.[5][7]
  5. (figurative) Of words, sounds, a breeze or a temper: soft, gentle.[5][7]

Word family

  • λειογένειος (leiogéneios)
  • λειότης (leiótēs)
  • λειόπους (leiópous)
  • λεωπετρία (leōpetría)
  • λίς (lī́s)
  • λιτός (lītós)
  • Latin lēvis

References

  1. ^ a b c d e 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. ^ a b c Frisk, Hjalmar (1960–1972), Griechisches etymologisches Wörterbuch, 3 vols, Heidelberg: Carl Winter
  4. ^ a b Babiniotis, Georgios (2010), Ετυμολογικό λεξικό της νέας ελληνικής γλώσσας [Etymological Dictionary of Modern Greek], Athens: Κέντρο Λεξικολογίας
  5. ^ a b c d e f g h i j k l Liddell, Henry George; Scott, Robert; Jones, Henry Stuart (1940), A Greek-English Lexicon, 9th ed., Oxford: Clarendon Press
  6. ^ a b c Cunliffe, Richard John (1924), A Lexicon of the Homeric Dialect, London: Blackie and Son
  7. ^ a b c d e f g h i j 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. ^ a b Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki
  10. ^ a b Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge

Related etymologies

Cite this entry

“Λεῖος.” Etymologically, 25 Oct. 2026, etymologically.com/grc/%CE%BB%CE%B5%E1%BF%96%CE%BF%CF%82. Accessed 25 Oct. 2026.

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