LATIN DICTIONARYLexicon Latīnum
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“castrate” in Latin

The English word castrate itself goes back to Latin castrō, through castrātus.

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

castrate
virilitatem alicui adimere, excidere, or exsecare. Vid: Castrare, evirare, eunuchare, belong rather to the language of low comedy.

Quick answer

What is the Latin word for castrate?
The usual Latin words for “castrate” are excidō, exsecō. 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.