plagiarizer

verb (used with object), pla·gia·rized, pla·gia·riz·ing.

1. to take and use by plagiarism.
2. to take and use ideas, passages, etc., from (another’s work) by plagiarism.

verb (used without object), pla·gia·rized, pla·gia·riz·ing.

3. to commit plagiarism.

verb

1. to appropriate (ideas, passages, etc) from (another work or author)

v.1716, from plagiary “plagiarist” (see plagiarism) + -ize. Related: Plagiarized; plagiarizing.