• Ἀΐδης(Aḯdēs) —Homeric
• Ἀΐδᾱς(Aḯdās) —Doric
• Ἀϊδωνεύς(Aïdōneús)
• ᾈδωνεύς(Āidōneús)

For*ἄϝις(*áwis,“unseen”), fromProto-Indo-European*n̥wids(“unseen”)^[1] equivalent toἀ-(a-,“un-”) + the root ofἰδεῖν(ideîn) +-ς(-s). The root nominal was remodeled into an ᾱ-stem. Compareἀϊδής(aïdḗs,“invisible”), which looks very similar, but is most likely based on the etymon of the related σ-stemεἶδος(eîdos).

Aspiration arose in Attic under the influence of the definite articleὁ(ho).

ᾍδης• (Hā́idēs) m (genitiveᾍδου);first declension(Attic)

1. (Greekmythology)Hades (Greek god)
2. (Greekmythology)Hades (amythologicallocation, theunderworld inAncient Greek religion)
3. (Koine,biblical) theGrave,Hell

The personal name rarely takes a definite article.

• Greek:Άδης(Ádis)
• → Latin:Hādēs
• → Old Church Slavonic:адъ(adŭ) (see there for further descendants)

• Πλούτων(Ploútōn)

• “ᾍδης”, inLiddell & Scott (1940)A Greek–English Lexicon, Oxford: Clarendon Press
• “ᾍδης”, inLiddell & Scott (1889)An Intermediate Greek–English Lexicon, New York: Harper & Brothers
• ᾍδης inBailly, Anatole (1935)Le Grand Bailly: Dictionnaire grec-français, Paris: Hachette
• Bauer, Walter et al. (2001)A Greek–English Lexicon of the New Testament and Other Early Christian Literature, Third edition, Chicago: University of Chicago Press
• ᾍδης in theDiccionario Griego–Español en línea (2006–2025)
• G86 inStrong, James (1979)Strong’s Exhaustive Concordance to the Bible
• Woodhouse, S. C. (1910)English–Greek Dictionary: A Vocabulary of the Attic Language‎^[1], London: Routledge & Kegan Paul Limited.
  • below idem, page 73.
  • death idem, page 198.
  • hades idem, page 380.
  • hell idem, page 395.
  • infernal idem, page 437.
  • lower idem, page 503.
  • nether idem, page 556.
  • shade idem, page 760.
  • under idem, page 912.
  • world idem, page 989.