1400-50;late Middle Englishprosecuten to follow up, go on with < Latinprōsecūtus, past participle of prōsequī to pursue, proceed with, equivalent to prō-pro-1 + secū-, variant stem of sequī to follow + -tus past participle suffix
reprosecute, verb (used with object), reprosecuted, reprosecuting.
early 15c., "follow up, pursue" (some course or action), from L. prosecutus, pp. of prosequi "follow after" (see pursue). Meaning "bring to a court of law" is first recorded 1570s. Prosecutor in legal sense is attested from 1660s; prosecution in this sense is from 1630s.