pseudonymous

American  

[soo-don-uh-muhs] / suˈdɒn ə məs /

adjective

1. bearing a false or fictitious name.

2. writing or written under a fictitious name.

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pseudonymous British  

/ sjuːˈdɒnɪməs /

adjective

1. having or using a false or assumed name

2. writing or having been written under a pseudonym

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Usage

What does pseudonymous mean? Pseudonymous means having, using, or written under a pseudonym—a false or fictitious name, especially one used by an author. The word is often used to describe a person who uses a pseudonym, as in the pseudonymous artist, or something attributed to a false name, as in her pseudonymous novels. 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 publish pseudonymously instead of under 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 pseudonymous titles John Doe, Jane Doe, Richard Roe, and Jane Roe are used in cases when a person’s name is being kept anonymous. Such names can also be called anonyms. Example: It’s sometimes hard to tell whether pseudonymous posts are published by bots or real people.

Other Word Forms

• pseudonymously adverb
• pseudonymousness noun

Etymology

Origin of pseudonymous

1700–10; < Greek pseudṓnymos; pseudonym, -ous

Example Sentences

Finally, the hosts delve into the New York Times’ quest to uncover the mysterious creator of Bitcoin, the pseudonymous Satoshi Nakamoto, and argue over the investigation’s conclusion.

From Slate • Apr. 11, 2026

He had read the original bitcoin white paper, published in 2008 by the pseudonymous Satoshi Nakamoto, and while working for Airbnb in 2011 had struggled to send money to South America.

From The Wall Street Journal • Jan. 30, 2026

On its website, it says the project has been founded and developed by "a pseudonymous collective" based across "multiple jurisdictions".

From BBC • Nov. 28, 2025

Some appear to have been relentlessly touted by unofficial and pseudonymous investor groups, according to documents and chat logs reviewed by Barron’s.

From Barron's • Nov. 18, 2025

He is, without other proof, reputed the lawful representative of the anonymous or pseudonymous author.

From Copyright: Its History and Its Law by Bowker, Richard Rogers