Try Our Apps


Supposedly vs. Supposably


[sood-n-im] /ˈsud n ɪm/
a fictitious name used by an author to conceal his or her identity; pen name.
Compare allonym (def 1).
Origin of pseudonym
1840-50; < Greek pseudṓnymon false name; see pseud-, -onym
alias, nom de plume. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for pseudonym
Contemporary Examples
Historical Examples
British Dictionary definitions for pseudonym


a fictitious name adopted, esp by an author
Derived Forms
pseudonymity, noun
Word Origin
C19: via French from Greek pseudōnumon
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
Cite This Source
Word Origin and History for pseudonym

1828, in part a back-formation from pseudonymous, in part from German pseudonym and French pseudonyme (adj.), from Greek pseudonymos "having a false name, under a false name," from pseudes "false" (see pseudo-) + onyma, Aeolic dialectal variant of onoma "name" (see name (n.)).

"Possibly a dictionary word" at first [Barnhart]. Fowler calls it "a queer out-of-the-way term for an everyday thing." Properly in reference to made-up names; the name of an actual author or person of reputation affixed to a work he or she did not write is an allonym. An author's actual name affixed to his or her own work is an autonym (1867).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for pseudonym

Few English speakers likely know this word

Word Value for pseudonym

Scrabble Words With Friends