prosecute (v.)

early 15c., "follow up, pursue" (some course or action), from Latin prosecutus, past participle of prosequi "follow after, accompany; chase, pursue; attack, assail, abuse," from pro- "forward" (see pro-) + sequi "follow" (from PIE root *sekw- (1) "to follow"). Meaning "bring to a court of law" is first recorded 1570s. Meaning "go into detail" is from 1530s.

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