LATIN DICTIONARYLexicon Latīnum
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“prosecute” in Latin

The English word prosecute itself goes back to Latin sequor, through prōsecūtus.

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

prosecute
To continue, pursue steadily, facere aliquid pergo; exsequi, especially persequi aliquid (to carry out to the end): alicui rei instare (to pursue earnestly and zealously; e.g., operi): perseverare in re, or followed by an infinitive (with perseverance; e.g., perseverare in bello or perseverare bellare; perseverare in obsidione): continuare or non intermittere aliquid (to carry on without interruption). To prosecute a thing further, aliquid longius prosequi: to prosecute a journey, iter persequi; iter conficere pergere; iter continuare, non intermittere: to prosecute one’s studies, studiis insistere; studia sua urgere (vigorously): to prosecute a victory, a victoria nihil cessare (Liv.); recentibus proelii vestigiis ingredi (Hirt.); to prosecute one’s right, jus suum exsequi or persequi.
(At law)(At law), judicio persequi aliquem: judicio experiri cum aliquo. Vid: ACTION.

Quick answer

What is the Latin word for prosecute?
The usual Latin words for “prosecute” are exsequor, continuō, opus. 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.