as in aliases
a fictitious or assumed name
the most notorious serial killer of the 19th century remains known only by the pseudonym of Jack the Ripper
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Recent Examples of pseudonyms
Most traders on prediction markets like Polymarket and Kalshi place bets under pseudonyms, not their real names.
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Bobby Allyn, NPR, 5 Jan. 2026
All the women who spoke to Fortune about their relationships with chatbots for this story asked to be identified under pseudonyms out of concern that admitting to a relationship with an AI model carries a social stigma that could have negative repercussions for their livelihoods.
—Beatrice Nolan, Fortune, 26 Dec. 2025
The film is a new adaptation of the 1982 novel by Richard Bachmann (one of Stephen King's pseudonyms), the second film adaptation after the 1987 hit starring Arnold Schwarzenegger.
—Ryan Coleman, Entertainment Weekly, 9 Nov. 2025
Although some characters in Red Alert have pseudonyms, both series end with images of the actors embracing their real-life counterparts.
—Kathryn Vanarendonk, Vulture, 14 Oct. 2025
The platform’s private servers let activists organize out of the public eye, often under pseudonyms, and use text and calling features.
—Mandy Taheri, MSNBC Newsweek, 3 Oct. 2025
The plaintiffs’ names in the lawsuit are pseudonyms to protect their identities and safety, attorneys said.
—Daniella Silva, NBC news, 13 Aug. 2025
Those names are also pseudonyms.
—Julia Marnin, Miami Herald, 12 Aug. 2025
Recent Examples of Synonyms for pseudonyms
aliases
Noun
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This can limit the usefulness of aliases for certain sign-ups.—
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For comparison, services like Outlook and Proton Mail already support aliases.—
Cite this Entry
“Pseudonyms.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/pseudonyms. Accessed 20 Jan. 2026.
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