Etymologically

ἀδύνατος

Etymology and origin of the Ancient Greek word ἀδύνατος

Confidence
Established
Formation
Derivation
First attested
500–400 BC Epicharmus and Pindar
Ultimate origin
Ancient Greek δύναμαι
Etymology tree
inherited borrowed derived
Ancient Greek δύναμαι
Ancient Greek δυνατός
Ancient Greek ἀδύνατος
From the same root
Ancient Greek δύναμις ← δύναμαι
Ancient Greek δυνάστης ← δύναμαι

Pronunciation

  • 5th-century BC Attic: /a.dý.na.tos/[1]
  • 4th-century AD Koine: /aˈðy.na.tos/[1]
  • 10th-century Byzantine: /aˈðy.na.tos/[1]

Forms

ᾰ̓δῠ́νᾰτος (adúnatos) m or f (neuter ᾰ̓δῠ́νᾰτον); second declension[1]

Etymology

It is formed from Ancient Greek ἀ- (a-, “not”) + δυνατός (dunatós, “able, possible”),[1] the adjective being from δύναμαι (dúnamai, “to be able”) with the verbal suffix -τός (-tós).[1] Beekes analyses the verb as a present with a generalized nasal infix (⟨δύ-ν-α-μαι⟩) and reports LIV's root Proto-Indo-European *dewh₂- (“to join together”), but leaves the origin open.[2]

Earliest recorded meaning

Pindar's second Pythian ode calls something impossible, and Epicharmus uses it of someone unable to keep silent.[3][4][5]

Semantic evolution

Of persons it means unable to do something (Herodotus, Euripides) and, without a complement, weak or without strength (Herodotus, Euripides, Lysias).[4][5] At Athens οἱ ἀδύνατοι were the disabled citizens who received public relief, as in the title of Lysias' 24th speech and in Aristotle's Constitution of the Athenians.[4][5] It also means poor (Thucydides), of no power or importance (islands, a city), and of a ship, disabled, while Polybius uses it of barren land.[4][5] Attic curse tablets ask for enemies to be made powerless.[5]

Of things it means impossible, from Pindar and Euripides on, and Democritus speaks of hopes that cannot be fulfilled.[4][5] In Aristotle's logic the reduction to the impossible is ἡ εἰς τὸ ἀδύνατον ἀπαγωγή.[4] In the New Testament it describes a man unable to use his feet, the weak in faith, and what is impossible for people but not for God.[6][5]

Modern Greek αδύνατος (adýnatos) continues it, meaning weak, thin, impossible, and poor at a subject.[7]

Timeline

  • 6th–5th century BC – Pindar uses it for “impossible”, and Epicharmus of a person unable to keep silent.[3][5][4]
  • 5th century BC – Herodotus uses it of weak men and disabled ships.[4][5]
  • 5th–4th century BC – Lysias uses it of the disabled citizens on public relief.[4][5]
  • 4th century BC – Aristotle names the reduction to the impossible.[4]
  • 2nd century BC – Polybius uses it of barren land.[5]
  • 1st century AD – The Acts of the Apostles uses it of a man unable to use his feet.[6][5]
  • Modern Greek – αδύνατος (adýnatos) means weak, thin or impossible.[7]

Meanings

Adjective

  1. Of persons, unable, incapable (with an infinitive).[4][5]
  2. Without strength, weak, sickly; of a ship, disabled; of land, barren.[4][5]
  3. (Athens) Disabled, unfit for military service or work, as in οἱ ἀδύνατοι, the invalids on public relief.[4][5]
  4. Without power or importance, as in ἀδύνατος χρήμασι, poor.[5][4]
  5. Of things, impossible, as in τὸ ἀδύνατον, the impossible, and ἀδύνατόν ἐστι with an infinitive, it is impossible to.[4][5][3]
  6. (logic) ἡ εἰς τὸ ἀδύνατον ἀπαγωγή, the reductio ad impossibile.[4]
  7. (New Testament) Weak in faith.[6][5]

Usage notes

Euripides' Helen says that attempting the impossible is not the mark of a wise man, and a proverb, ἀδύνατα θηρᾷς, “you are hunting the impossible”, is recorded.[5]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ 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 Slater, William J. (1969), Lexicon to Pindar, Berlin: De Gruyter
  4. ^ a b c d e f g h i j k l m n o p 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 g h i j k l m n o p q r s Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge
  6. ^ 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
  7. ^ a b Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki
Cite this entry

“Ἀδύνατος.” Etymologically, 1 Nov. 2026, etymologically.com/grc/%E1%BC%80%CE%B4%CF%8D%CE%BD%CE%B1%CF%84%CE%BF%CF%82. Accessed 2 Nov. 2026.

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