LATIN DICTIONARYLexicon Latīnum
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“purge” in Latin

The English word purge itself goes back to Latin agō, through pūrgō.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

purge
purgare, repurgare, expurgare, purum facere (general term: ☞ avoid purificare): mundum facere, mundare, emundare (to cleanse from dirt; the two latter words are post-Augustan): lustrare (by a purifying sacrifice). To purge the body, purgatione alvum sollicitare. (1) Of the medicine, alvum movere, ciere, solvere, ducere, subducere; (2) of the physician [Vid: “administer a PURGATIVE”]. To be purged, alvum dejicere, or dejicere only (Cels., 2, 12, 2, seems to show that ducere is by an injection).

Quick answer

What is the Latin word for purge?
The usual Latin words for “purge” are pūrgō, repūrgō, expūrgō; also mundō, ēmundō, lūstrō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.