pseudonym

noun

pseu·​do·​nym ˈsü-dÉ™-ËŒnim How to pronounce pseudonym (audio)
Synonyms of pseudonymnext
: 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
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Felsen was the pseudonym of Nikolai Freudenstein. Literary Hub, 25 Mar. 2026 Eighteen-year-old Fernando Hernández García, who is using a pseudonym to protect the safety of his family in Mexico, is speaking on behalf of his 11-year-old sister. Nicole Foy, ProPublica, 24 Mar. 2026 The high school students, who are seeking to proceed under pseudonyms, filed the lawsuit in California, where xAI — Musk's artificial intelligence company — has its headquarters. ABC News, 20 Mar. 2026 The high school students, who are seeking to proceed under pseudonyms, filed the lawsuit in California, where xAI — Musk’s artificial intelligence company — has its headquarters. Travis Loller, Los Angeles Times, 20 Mar. 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 27 Mar. 2026.

Kids Definition

pseudonym

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

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