Duping is an act of fooling or deceiving someone, which is often seen as unethical or dishonest. There are many synonyms for the word "duping" that may be used to convey the same meaning and to vary one's writing style. Some of these synonyms include tricking, deceiving, misleading, defrauding, fooling, conning, swindling, hoodwinking, bamboozling, bilking, cheating, and scamming. Using these synonyms can be helpful in maintaining the reader's interest and preventing repetition. It can also provide a more precise and varied language experience that can elevate the reader's understanding of the text.