[ soo-doh ]
/ ˈsu doʊ /


not actually but having the appearance of; pretended; false or spurious; sham.
almost, approaching, or trying to be.

Nearby words

  1. pseudaxis,
  2. pseudepigrapha,
  3. pseudepigraphy,
  4. pseudesthesia,
  5. pseudisodomic,
  6. pseudo force,
  7. pseudo-,
  8. pseudo-ainhum,
  9. pseudo-cleft sentence,
  10. pseudo-code

Origin of pseudo

First recorded in 1940–45; independent use of pseudo-


a combining form meaning “false,” “pretended,” “unreal,” used in the formation of compound words (pseudoclassic; pseudointellectual): in scientific use, denoting close or deceptive resemblance to the following element (pseudobulb; pseudocarp), and used sometimes in chemical names of isomers (pseudoephedrine).
Also especially before a vowel, pseud-.

Origin of pseudo-

< Greek, combining form of pseudḗs false, pseûdos falsehood

Can be confusedpseudo- quasi- Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pseudo

British Dictionary definitions for pseudo


/ (ˈsjuːdəʊ) /


informal not genuine; pretended


sometimes before a vowel pseud-

combining form

false, pretending, or unauthenticpseudo-intellectual
having a close resemblance topseudopodium

Word Origin for pseudo-

from Greek pseudēs false, from pseudein to lie

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

Word Origin and History for pseudo
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for pseudo



False; deceptive; sham:pseudohematuria.
Apparently similar:pseudomyxoma.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.