Etymologically

μυστικός

Etymology and origin of the Ancient Greek word μυστικός

Confidence
Established
Formation
Derivation
First attested
500–400 BC Aeschylus
Ultimate origin
Ancient Greek μύστης
Etymology tree
inherited borrowed derived
Ancient Greek μύω
Ancient Greek μύστης
Ancient Greek μυστικός
Latin mysticus
English mystic
From the same root
Ancient Greek μυέω ← μύω
Ancient Greek μυστήριον ← μύστης
English mystical ← mysticus

Pronunciation

  • 5th-century BC Attic: /mys.ti.kós/[1]
  • 4th-century AD Koine: /mys.tiˈkos/[1]
  • 10th-century Byzantine: /mys.tiˈkos/[1]

Forms

μῠστῐκός (mustikós) m (feminine μῠστῐκή, neuter μῠστῐκόν); first/second declension[1]

Etymology

It is formed from Ancient Greek μύστης (mústēs, “initiate”) + -ικός (-ikós, “adjective suffix”).[1][2] The noun belongs with μυέω (muéō, “to initiate”), which Beekes explains as an innovation beside μύω (múō, “to close the eyes or lips”), a verb that may go back to Proto-Indo-European *mews- (“to shut”).[3]

Earliest recorded meaning

It is first found in a fragment of Aeschylus and in Herodotus, where it means “relating to the Mysteries”: Herodotus uses it of the Iacchus chant.[4][5][6]

Semantic evolution

In Classical Greek it kept to the Mysteries: Aristophanes speaks of “mystic” pigs for sacrifice and of a breeze smelling of the initiates' torches, and Thucydides calls the rites themselves τὰ μυστικά.[4][5] The Neoplatonists used it for hidden or mystical doctrine.[4] Cicero used it in his letters in the sense “private, secret”, and the adverb meant “secretly” in Strabo and the Septuagint.[4] Latin borrowed it as mysticus.[7]

Medieval vernacular Greek used it for what is secret or confidential.[8] In Modern Greek μυστικός (mystikós) is a learned word: its main sense “secret” owes something to French secret, and its sense “mystical” continues the Hellenistic use.[9] Babiniotis dates the derivative μυστικισμός (mystikismós) to 1812, a rendering of French mysticisme.[2]

Timeline

  • 6th–5th century BC – Aeschylus uses it of a rite of the Mysteries.[4][10]
  • 5th century BC – Herodotus uses it for the Iacchus chant.[4][5][10]
  • 5th century BC – Thucydides calls the rites of the Mysteries τὰ μυστικά.[4][5]
  • 1st century BC – Cicero uses it in his letters in the sense “secret”.[4]
  • 5th century AD – Proclus uses it for mystical doctrine.[4][10]
  • 1100–1669 – Vernacular texts use it for secret or confidential things.[8]
  • 1812 – The Modern Greek derivative μυστικισμός (mystikismós) “mysticism” is first recorded.[2]

Meanings

Adjective

  1. Relating to the mysteries, mystic.[4][5]
  2. (neuter plural, as a noun) The Mysteries, their rites.[4][5]
  3. (Neoplatonism) Mystical, of hidden doctrine.[4]
  4. (late) Private, secret.[4][8]

Word family

  • μυστικῶς (mustikôs)

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Babiniotis, Georgios (2010), Ετυμολογικό λεξικό της νέας ελληνικής γλώσσας [Etymological Dictionary of Modern Greek], Athens: Κέντρο Λεξικολογίας
  3. ^ 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 d e f g h i j k l m Liddell, Henry George; Scott, Robert; Jones, Henry Stuart (1940), A Greek-English Lexicon, 9th ed., Oxford: Clarendon Press
  5. ^ a b c d e f Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
  6. ^ Keersmaekers, Alek (2021–2025), GLAUx: The Greek Language Automated corpus, https://github.com/alekkeersmaekers/glaux
  7. ^ Saalfeld, Günther Alexander (1874), Index Graecorum vocabulorum in linguam latinam translatorum, Berlin: Weidmann
  8. ^ a b c Kriaras, Emmanuel, Επιτομή του Λεξικού της μεσαιωνικής ελληνικής δημώδους γραμματείας 1100–1669, Κέντρο Ελληνικής Γλώσσας, https://www.greek-language.gr
  9. ^ Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki
  10. ^ a b c Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge

Borrowed into

Cite this entry

“Μυστικός.” Etymologically, 1 Nov. 2026, etymologically.com/grc/%CE%BC%CF%85%CF%83%CF%84%CE%B9%CE%BA%CF%8C%CF%82. Accessed 2 Nov. 2026.

Last edited on . ·