Etymologically

κάθαρσις

Etymology and origin of the Ancient Greek word κάθαρσις

Confidence
Established
Formation
Derivation
First attested
400s BC Herodotus More words from the 5th century BC
Ultimate origin
Ancient Greek καθαρός

Pronunciation

  • 5th-century BC Attic: /ká.tʰar.sis/[1]
  • 4th-century AD Koine: /ˈka.θar.sis/[1]
  • 10th-century Byzantine: /ˈka.θar.sis/[1]

Forms

κᾰ́θᾰρσῐς (kátharsis) f (genitive κᾰθᾰ́ρσεως); third declension[1] Elean κόθαρσις.[2]

Etymology

It is formed from Ancient Greek καθαίρω (kathaírō, “to cleanse”) + -σις (-sis).[1][3] The verb comes from καθαρός (katharós, “pure, clean”), which Beekes considers Pre-Greek because of its variation between α and ο.[4][5]

Earliest recorded meaning

Herodotus uses it for the ritual cleansing of a man from bloodguilt.[2][6][7]

Semantic evolution

The word covered every kind of purging, of visible dirt and of invisible defilement.[6] Plato defines purification as separating the soul as far as possible from the body, and uses it in the Cratylus and the Sophist.[2][8] In Hippocratic medicine it was the clearing off of morbid humours, natural or caused by drugs, and also the menses.[2][8] Aristotle's definition of tragedy, which through pity and fear accomplishes the purging of such emotions, gave it its most famous use.[2][8]

Later it meant the cleansing of the universe by fire for the Stoics, the clarification of a problem for Epicurus, the pruning of trees for Theophrastus, and the winnowing of grain in the papyri.[2] The Septuagint uses it for a woman's purification after childbirth.[9] The Latin rites of lūstrātiō were what the Greeks called κάθαρσις.[10]

Medieval Greek used it for moral purification and for bodily evacuation, and it survives as κάθαρση (kátharsi).[11][1] English took catharsis in 1770 as a medical term for purging; the sense of emotional release dates from 1872, and the psychotherapeutic one from 1909.[12]

Timeline

  • 5th century BC – Herodotus uses it for ritual purification from bloodguilt.[2][6][13]
  • 5th century BC – Hippocratic writers use it for evacuation of the body and for the menses.[2][13]
  • 4th century BC – Plato defines it as separating the soul from the body.[2][8][13]
  • 4th century BC – Aristotle uses it for the purging of pity and fear through tragedy.[2][8][13]
  • 4th–3rd century BC – Theophrastus uses it for the pruning of trees.[2][13]
  • 2nd century BC – Papyri use it for the winnowing of grain.[2]
  • 1100–1669 – Vernacular texts use it for moral purification and bodily evacuation.[11]
  • 1770 – English borrows catharsis as a medical term.[12]
  • Modern Greek – It survives as κάθαρση (kátharsi).[1][11]

Meanings

Noun

  1. Cleansing from guilt or defilement, ritual purification.[2][8]
  2. (philosophy) Purification of the soul, its separation from the body.[2][8]
  3. Cleaning (of a horse, of grain); cleansing of food before or by cooking.[8][2]
  4. (medicine) Clearing off of morbid humours, evacuation, purging; the menses.[2][8]
  5. The purging of emotions such as pity and fear through tragedy, catharsis.[2][8]
  6. Clarification, explanation.[2]
  7. Pruning of trees.[2]
  8. Winnowing of grain; clearing of land.[2]

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 j k l m n o p q r s t Liddell, Henry George; Scott, Robert; Jones, Henry Stuart (1940), A Greek-English Lexicon, 9th ed., Oxford: Clarendon Press
  3. ^ Βικιλεξικό, the Greek Wiktionary, https://el.wiktionary.org
  4. ^ Μανδουλίδης, Ετυμολογικό λεξικό της αρχαίας ελληνικής
  5. ^ 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
  6. ^ a b c Cancik, Hubert; Schneider, Helmuth, eds. (2002–2010), Brill's New Pauly: Encyclopaedia of the Ancient World, Leiden: Brill
  7. ^ Keersmaekers, Alek (2021–2025), GLAUx: The Greek Language Automated corpus, https://github.com/alekkeersmaekers/glaux
  8. ^ a b c d e f g h i j Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
  9. ^ Lust, Johan; Eynikel, Erik; Hauspie, Katrin (2003), Greek-English Lexicon of the Septuagint, rev. ed., Stuttgart: Deutsche Bibelgesellschaft
  10. ^ Smith, William; Wayte, William; Marindin, G. E., eds. (1890), A Dictionary of Greek and Roman Antiquities, 3rd ed., London: John Murray
  11. ^ a b c Kriaras, Emmanuel, Επιτομή του Λεξικού της μεσαιωνικής ελληνικής δημώδους γραμματείας 1100–1669, Κέντρο Ελληνικής Γλώσσας, https://www.greek-language.gr
  12. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  13. ^ a b c d e Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge
Cite this entry

“Κάθαρσις.” Etymologically, 13 Nov. 2026, etymologically.com/grc/%CE%BA%CE%AC%CE%B8%CE%B1%CF%81%CF%83%CE%B9%CF%82. Accessed 13 Nov. 2026.

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