Pseudepigraphic refers to a type of literature where the authorship is falsely attributed to someone else. Some synonyms for pseudepigraphic include fraudulent, false, spurious, forged, pseudo, bogus, and fake. These terms all describe an impostor or counterfeit that is presented as genuine. In a similar vein, other synonyms could include counterfeit, phony, and hoax. While pseudepigraphic can refer specifically to written works, these synonyms can also describe other forms of deception, such as fake news or fraudulent art. Ultimately, these words convey a sense of deceitfulness or dishonesty that undermines the credibility of the subject at hand.