Plagiarise (verb)
alternative spelling of plagiarize
Plagiarize (verb)
To use, and pass off as one’s own, someone else’s writing/speech.
Wiktionary
Plagiarize (verb)
take (the work or an idea of someone else) and pass it off as one’s own
“he was fined $6,000 for having plagiarized the song”
Plagiarize (verb)
take the work or an idea of (someone) and pass it off as one’s own
“the author claims she was plagiarized”
Oxford Dictionary