LATIN DICTIONARYLexicon Latīnum
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“callous” in Latin

The English word callous itself goes back to Latin callum, through callōsus.

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

callous adj.
callosus; duricorius (Macrobius, Saturnalia, 2, 16; Plin., 15, 18, 19): induratus.

Quick answer

What is the Latin word for callous?
The usual Latin words for “callous” are callōsus, dūrĭcŏrĭus, indūrō; also Măcrŏbĭus. 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.