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cathartic

/kəˈθɑːrtɪk/

Purging physically or relieving intense emotional tension

From Greek cathar (pure).

adjective
noun
cathar
Ancient Greek
AI-inferred
katharos (καθαρός)
“Pure, clean”; the underlying Greek adjective.
Ancient Greek
AI-inferred
katharsis (κάθαρσις)
“Cleansing, purging,” including ritual or emotional purification.
Ancient Greek
Verified
kathartikós (καθαρτικός)
“Fit for cleansing; purgative.”

from Greek kathartikos "fit for cleansing, purgative,"

Latin
Verified
catharticus
Learned borrowing meaning “purgative, purifying.”

from Latin catharticus

+1 more source
English
Verified
cathartic
First recorded in the 1610s for medicines; broadened by the 1670s to emotional release.

from Latin catharticus

+1 more source
Modern English
cathartic

Picture a seventeenth-century physician reaching for a bottle meant to cleanse the body from within: that was the original neighborhood of “cathartic,” first recorded in English in the 1610s. Its Greek ancestor, katharsis, meant purging or cleansing, but Aristotle gave the idea a dramatic twist: tragedy could purge an audience’s pity and fear without anyone taking a medicinal draught. The same Greek “pure” also appears in Cathar, the name applied to twelfth-century religious sects in Languedoc and Piedmont who were branded “the Pure”—a striking cousin hiding inside a modern word for emotional release. English eventually moved the word from the intestine to the imagination, so a sobbing performance, furious diary entry, or song about leaving can all be cathartic. Remember the route: first the body was cleansed, then the soul, and finally the theater became the medicine cabinet.

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