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pseudonym

American  
[sood-n-im] / ˈsud n ɪm /

noun

  1. a fictitious name used especially by an author to conceal their identity; pen name.

    Synonyms:
    nom de plume, alias

pseudonym British  
/ ˈsjuːdəˌnɪm /

noun

  1. a fictitious name adopted, esp by an author

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What is a pseudonym? A pseudonym is a false or fictitious name, especially one used by an author.When an author uses a pseudonym, it can also be called a pen name or a nom de plume.There are many reasons an author may choose to use a pseudonym instead of their own name, such as to avoid controversy or to create a persona. Many women authors throughout history have used a male or gender-neutral pseudonym to get their work published due to bias against women writers. A famous example is Mary Ann Evans, who used the pseudonym George Eliot.The word pseudonym can refer to a fake or false name used by anyone, not just writers. It’s typically used so a person can remain anonymous. In legal proceedings, the pseudonyms John Doe, Jane Doe, Richard Roe, and Jane Roe are used in​ when a person’s name is being kept anonymous. Such names can also be called anonyms.Example: A lot of people use pseudonyms when posting controversial opinions online.

Other Word Forms

  • pseudonymity noun

Etymology

Origin of pseudonym

First recorded in 1840–50; from Greek pseudṓnymon “false name”; pseud-, -onym

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The makers of the documentary, The Investigation of Lucy Letby, have given Baby D the pseudonym "Zoe".

From BBC • Feb. 4, 2026

The video game adaptation written, directed and financed by YouTube star Mark Fischbach, known by his pseudonym Markiplier, is a post-apocalyptic adventure.

From Barron's • Feb. 1, 2026

More than a pseudonym, these poets and writers had different backgrounds and influences.

From Los Angeles Times • Jan. 30, 2026

As she turned over ideas for a pseudonym, Tergit thought of the German word Gitter—the metal grill or grating on a window or a gate—and reversed the syllables.

From The Wall Street Journal • Jan. 16, 2026

That is why he chose a pseudonym for me: Gul Makai, which means “cornflower” and is the name of a heroine in a Pashtun folk story.

From "Malala: The Girl Who Stood Up for Education and Changed the World" by Malala Yousafzai