Plagiarist (noun)

A person who practices plagiarism, which is the act of taking someone else's work or ideas and presenting them as one's own.

Origin:

Late latin plagiarista, from latin plagiarus 'kidnapper, plagiarist', from plagiarius 'kidnapper, thief', from plagium 'kidnapping, theft'.

Examples:

1. The student was accused of being a plagiarist after submitting a paper that was copied from the internet.
2. The professor detected the plagiarism and informed the student that they would receive a failing grade.
3. The writer was accused of being a plagiarist after it was discovered that they had lifted passages from another author's book.
4. The journalist was fired after it was revealed that they had plagiarized several articles from other sources.
5. The musician was sued for plagiarism after it was discovered that they had copied the melody from another song.