Wikipedia
Rogeting is a neologism created to describe the act of modifying a published source by substituting synonyms for sufficient words to fool common plagiarism detection software, often resulting in the creation of new meaningless phrases through extensive synonym swapping. The term, a reference to Roget's Thesaurus, was coined by Chris Sadler, principal lecturer in business information systems at Middlesex University, who discovered the practice in papers submitted by his students.
A similar but much more sophisticated strategy consists in substituting synonyms, or modified words, in the internal binary code of an essay saved as an electronic file. Unlike the simplest form of rogeting, the documents produced through this kind of technically-advanced rogeting are visually identical to the original ones and the changes are not visible to the naked eye. The papers manage to cheat Turnitin as well as any other plagiarism detection services because of the inherent nature of their detection algorithms.