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[pree-suh-pohz] /ˌpri səˈpoʊz/
verb (used with object), presupposed, presupposing.
to suppose or assume beforehand; take for granted in advance.
(of a thing, condition, or state of affairs) to require or imply as an antecedent condition:
An effect presupposes a cause.
Origin of presuppose
late Middle English
1400-50; late Middle English < Middle French presupposer. See pre-, suppose
Related forms
[pree-suhp-uh-zish-uh n] /ˌpri sʌp əˈzɪʃ ən/ (Show IPA),
presuppositionless, adjective
1. presume. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for presuppose
  • However, they all presuppose that the planet is warming, which it isn't.
  • Of course, installing and using the product presuppose a degree of computer literacy that not all school districts possess.
  • But the answer seems to presuppose that the shrimp and the goby are making a choice of some kind.
  • Oh, but you presuppose that the world is based on the fear that controls you.
  • All but the first three chapters presuppose an acquaintance with wave mechanics.
  • The approach taken is to presuppose no background knowledge of syntactic theory or historical linguistics.
  • Housing price bubbles presuppose an ability of market participants to trade properties as they speculate about the future.
British Dictionary definitions for presuppose


verb (transitive)
to take for granted; assume
to require or imply as a necessary prior condition
(philosophy, logic, linguistics) to require (a condition) to be satisfied as a precondition for a statement to be either true or false or for a speech act to be felicitous. Have you stopped beating your wife? presupposes that the person addressed has a wife and has beaten her
Derived Forms
presupposition (ˌpriːsʌpəˈzɪʃən) noun
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
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Word Origin and History for presuppose

mid-15c., from Old French presupposer (14c.), from Medieval Latin praesupponere; see pre- + suppose. Related: Presupposed; presupposing.

Online Etymology Dictionary, © 2010 Douglas Harper
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