See more synonyms for suppose on
verb (used with object), sup·posed, sup·pos·ing.
  1. to assume (something), as for the sake of argument or as part of a proposition or theory: Suppose the distance to be one mile.
  2. to consider (something) as a possibility suggested or an idea or plan proposed: Suppose we wait until tomorrow.
  3. to believe or assume as true; take for granted: It is supposed that his death was an accident.
  4. to think or hold as an opinion: What do you suppose he will do?
  5. to require logically; imply; presuppose: The evidence supposes his presence near the scene.
  6. (used in the passive) to expect or design; require or permit (followed by an infinitive verb): The machine is supposed to make noise. I'm not supposed to run fast.
verb (used without object), sup·posed, sup·pos·ing.
  1. to assume something; presume; think.

Origin of suppose

1275–1325; Middle English supposen < Old French supposer, equivalent to sup- sup- + poser to pose1; compare Medieval Latin suppōnere to suppose, Latin: to substitute, place below
Related formssup·pos·a·ble, adjectivesup·pos·a·bly, adverbsup·pos·er, nounmis·sup·pose, verb, mis·sup·posed, mis·sup·pos·ing.un·sup·pos·a·ble, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for suppose

Contemporary Examples of suppose

Historical Examples of suppose

  • These circumstances have led me to suppose that you worship them as mere forms.


    Lydia Maria Child

  • "No, I suppose not," said Hester, thus disclaiming the title.

    Brave and Bold

    Horatio Alger

  • "I suppose you want to be taken back," said the superintendent, abruptly.

    Brave and Bold

    Horatio Alger

  • I suppose he'll be a little more fastidious, as the brother-in-law of Shepler.

    The Spenders

    Harry Leon Wilson

  • If he had been picked up by any vessel I suppose he would have written.

    Brave and Bold

    Horatio Alger

British Dictionary definitions for suppose


verb (tr; may take a clause as object)
  1. to presume (something) to be true without certain knowledgeI suppose he meant to kill her
  2. to consider as a possible suggestion for the sake of discussion, elucidation, etc; postulatesuppose that he wins the election
  3. (of theories, propositions, etc) to imply the inference or assumption (of)your policy supposes full employment
Derived Formssupposable, adjectivesupposer, noun

Word Origin for suppose

C14: from Old French supposer, from Medieval Latin suppōnere, from Latin: to substitute, from sub- + pōnere to put
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 suppose

early 14c., "to assume as the basis of argument," from Old French supposer "to assume," probably a replacement of *suppondre (influenced by Old French poser "put, place"), from Latin supponere "put or place under," from sub "under" + ponere "put, place" (see position). Meaning "to admit as possible, to believe to be true" is from 1520s.

Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with suppose


see I suppose so.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.