pseudonym
pseu·do·nym
noun
1.
a fictitious name used when the person performs a particular social role
Origin
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”). By surface analysis, pseudo- + -onym.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.