pseudonym

noun

pseu·​do·​nym ˈsü-də-ˌnim How to pronounce pseudonym (audio)
Synonyms of pseudonym
: a fictitious name
especially : pen name

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Pseudonym has its origins in the Greek adjective pseudōnymos, which means “bearing a false name.” French speakers adopted the Greek word as the noun pseudonyme, and English speakers later modified the French word into pseudonym. Many celebrated authors have used pseudonyms. Samuel Clemens wrote under the pseudonym “Mark Twain,” Charles Lutwidge Dodgson assumed the pseudonym “Lewis Carroll,” and Mary Ann Evans used “George Eliot” as her pseudonym.

Synonyms of pseudonym

Examples of pseudonym in a Sentence

Mark Twain is the pseudonym of the American writer Samuel L. Clemens. the most notorious serial killer of the 19th century remains known only by the pseudonym of Jack the Ripper
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Jefferson Lewis, 47, was arrested Thursday for the alleged murder of a five-year-old girl now known as Kumanjayi Little Baby, a pseudonym given by her family as a cultural measure among their Indigenous Warlpiri people to avoid the utterance of a deceased person’s name during a mourning period. Angus Watson, CNN Money, 1 May 2026 Polymarket uses cryptocurrencies to settle bets, enabling customers to use pseudonyms and remain anonymous. CBS News, 27 Apr. 2026 Many 18th- and 19th-century authors wrote under pseudonyms (pen names). Encyclopedia Britannica, 27 Apr. 2026 Polymarket uses cryptocurrencies to settle bets, allowing customers to use pseudonyms and remain anonymous. ABC News, 26 Apr. 2026 See All Example Sentences for pseudonym

Word History

Etymology

French pseudonyme, from Greek pseudōnymos bearing a false name, from pseud- + onyma name — more at name

First Known Use

1817, in the meaning defined above

Time Traveler
The first known use of pseudonym was in 1817

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Cite this Entry

“Pseudonym.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pseudonym. Accessed 2 May. 2026.

Kids Definition

pseudonym

noun
pseud·​onym
ˈsüd-ᵊn-ˌim
: a fictitious name
especially : pen name

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