IPA: //ˈpleɪdʒəraɪz//
KK: /ˈpleɪdʒəˌraɪz/
To use someone else's ideas or words and present them as your own without giving credit.
He was accused of trying to plagiarize his friend's essay.
Past: plagiarized
Past Participle: plagiarized
To take someone else's work, ideas, or expressions and present them as your own without giving proper credit.
He was accused of plagiarizing his classmate's essay.
Past: plagiarized
Past Participle: plagiarized
Plagiarize → It is formed from "plagiarius" (meaning kidnapper or plunderer) and the suffix "-ize" (meaning to make or to cause to be). The word "plagiarize" means to make someone else's work your own by taking it without permission, akin to stealing or kidnapping ideas.
Think of a 'kidnapper' ('plagiarius') taking someone else's work and making it their own — that's why to 'plagiarize' means to take someone else's ideas.