SAT GRE TOEFL pseudonym Definition A false or fictitious name, especially one used by an author. Example "Mark Twain is a pseudonym for Samuel Clemens." Sign in to save SAT Quiz → GRE Quiz → TOEFL Quiz → ← psalm psyche → Study tips featuring "pseudonym" Let the Argument Reveal Unfamiliar Word Meanings Group Words Together by Emotional Tone Map Each Word Into a Connected Network Related words SAT antonym SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal