LATIN DICTIONARYLexicon Latīnum
English → Latin

“mercy” in Latin

The English word mercy itself goes back to Latin merx, through mercēs.

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

mercy
Compassion, misericordia; animus misericors: to show mercy to, misericordiam alicui impertire, tribuere: that cannot hope for mercy, cui omnes aditus misericordiae praeclusi sunt (Cic., Verr., 5, 8, 21): the brethren (sisters) of mercy, *monachi (monachae) aegrotorum et egentium curatores, curatrices. [Vid: also, COMPASSION.]
Clemency, clementia; mansuetudo: lenitas; indulgentia. [SYN. in CLEMENCY.] To show mercy to anybody, clementer agere cum aliquo; clementer tractare aliquem; gratiam facere delicti.
Mercy
Misericordia, -ae (f.)

Quick answer

What is the Latin word for mercy?
The usual Latin words for “mercy” are misericordia, clēmentia, mānsuētūdō; also lēniō, indulgeō, tribuō. 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.