Etymologically

Etymology and origin of the Ancient Greek word δῆλος

Confidence
Probable
Formation
Inherited
First attested
700s BC Homer, Iliad
Inherited from
Proto-Indo-European *deih₂-(e)lo-
Ultimate origin
Proto-Indo-European *deyh₂-

Pronunciation

  • 5th-century BC Attic: /dɛ̂ː.los/[1]
  • 4th-century AD Koine: /ˈði.los/[1]
  • 10th-century Byzantine: /ˈði.los/[1]

Forms

δῆλος (dêlos) m (feminine δήλη, neuter δῆλον); first/second declension[1] Epic δέελος (déelos).[2]

Etymology

It probably continues *δέαλος (*déalos), inherited from Proto-Indo-European *deih₂-(e)lo-, from the root *deyh₂- (“to shine”).[3][1][4] Hesychius' glosses δίαλος (díalos, “clear”) and διάλας (diálas), dialect forms with δεα- (dea-), support this, as does the Homeric ἔκδηλος (ékdēlos).[3] The cognate is δέατο (déato, “seemed”).[3][1][5] Schulze and Chantraine explained it differently, and another theory derives it from *dyew- (“sky”).[3][1]

Earliest recorded meaning

Homer has it first as the Epic δέελος (déelos), meaning visible, of a mark set up in the Iliad; the Odyssey uses δῆλον for what is clear to the mind.[2][6]

Semantic evolution

The usual Classical sense is “clear, evident, plain” to the mind.[2][7] Classical writers used a personal construction on it: “he is clear doing” something, that is, he is clearly doing it, with a participle, or with ὡς or ὅτι; δῆλον ποιεῖν was “to make clear”, and the neuter δῆλον (ἐστί) “it is clear”.[7][2] Empedocles uses it of what is perceptible to any of the senses.[7]

The New Testament and early Christian writers keep δῆλον ὅτι, “it is clear that”.[8] Modern Greek keeps δήλος (dílos) as a learned word, with compounds such as έκδηλος (ékdilos) and πρόδηλος (pródilos).[5]

Timeline

  • Homer – The Iliad uses the Epic form for something plainly visible; the Odyssey uses δῆλον for what is plain.[2][6]
  • 6th century BC – Theognis and the Homeric Hymn to Apollo use it.[6]
  • 5th century BC – Herodotus and Thucydides use δῆλον ποιεῖν, “to make clear”.[7][4]
  • 5th century BC – Sophocles and Thucydides construe it with a participle.[2][7][4]
  • 1st century AD – The Letters to the Corinthians and to the Galatians use δῆλον ὅτι, “it is clear that”.[8]
  • Modern Greek – Modern Greek δήλος (dílos) survives as a learned word.[5]

Meanings

Adjective

  1. Visible, conspicuous, clear to the eye.[2][7]
  2. Perceptible to the senses.[7]
  3. Clear to the mind, evident, manifest, plain.[2][7][8]
  4. With a participle, or with ὡς or ὅτι: being clearly so, clearly doing something.[7][2]
  5. In δῆλον ποιεῖν: to make clear.[7][8]
  6. Neuter δῆλον (ἐστί): it is clear (that).[7][8]

Word family

  • δηλόω (dēlóō)
  • δέελος (déelos)
  • ἔκδηλος (ékdēlos)
  • δέατο (déato)
  • Modern Greek δήλος (dílos)

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ 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
  3. ^ 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
  4. ^ a b c Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge
  5. ^ a b c Babiniotis, Georgios (2010), Ετυμολογικό λεξικό της νέας ελληνικής γλώσσας [Etymological Dictionary of Modern Greek], Athens: Κέντρο Λεξικολογίας
  6. ^ a b c Keersmaekers, Alek (2021–2025), GLAUx: The Greek Language Automated corpus, https://github.com/alekkeersmaekers/glaux
  7. ^ a b c d e f g h i j k Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
  8. ^ a b c d e 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

Related etymologies

Cite this entry

“Δῆλος.” Etymologically, 29 Oct. 2026, etymologically.com/grc/%CE%B4%E1%BF%86%CE%BB%CE%BF%CF%82. Accessed 30 Oct. 2026.

Last edited on . ·