Bearing a false or fictitious name; as, a pseudonymous work.

having a false name; refers to those writings in the NT in which the author claimed to be Paul (or Peter, James, Jude or John) but really was someone else.

of a fictitious name.

bearing or using a fictitious name. a reconstructed pre-Christian Gospel which is believed by many to have been written much earlier than the four New Testament gospels. Q stands for the German word Quelle, which means "source." Q is said to be the source on which the Gospels draw a lot of their content.

bearing or identified by an assumed (often pen) name; "the writings of Mark Twain are pseudonymous"

Published and Copyrighted under a fictitious name.