pseudonym

Etymology

Back-formation from pseudonymous, from French pseudonyme (“pseudonymous”, adjective), from Ancient Greek ψευδώνυμος (pseudṓnumos), from ψευδής (pseudḗs, “false”) and ὄνυμα (ónuma), a dialectal form of ὄνομα (ónoma, “name”). Synchronically analyzable as pseudo- + -onym.

noun

1. A fictitious name (more literally, a false name), as those used by writers and movie stars.
   The Reverend Charles Lutwidge Dodgson wrote "Alice's Adventures in Wonderland" under the pseudonym Lewis Carroll.
   I doubt, indeed, whether I should not abandon the struggle altogether—leave this sad world of ordinary life for which I am so ill fitted, abandon the name of Cummins for some professional pseudonym, complete my self-effacement, and—a thing of tricks and tatters, of posing and pretence—go upon the stage. c. 1911, H. G. Wells, The Obliterated Man
   The best example of its literary use so far are the German novel The Golem, by Gustav Meyrink, and the drama The Dybbuk, by the jewish writer using the pseudonym "Ansky". 1928, H.P. Lovecraft, Supernatural Horror in Literature