The story
- Proto-Indo-European*pel-
- Proto-Indo-European*pleḱ-
- Latinplagium
- Latinplagiārius
- Englishplagiary
- English todayplagiarist
First known use, by meaning
- 1670s One who plagiarizes; or lifts the words, writings, or ideas of another, and passes them off as his or her own, thus engaging in plagiarism; a literary thief.
Etymology from Wiktionary, CC BY-SA 4.0.