[ suhp-uh-zish-uhs ]
See synonyms for suppositious on
  1. formed from or growing out of supposition: suppositious evidence.

Origin of suppositious

First recorded in 1615–25; shortened form of supposititious

Words Nearby suppositious Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use suppositious in a sentence

  • The example may be either actual or suppositious, but it must illustrate clearly and accurately.

    Public Speaking | Clarence Stratton
  • Then why permit the bond to be severed by a wholly suppositious breach?

    My Actor-Husband | Anonymous
  • "That's true patriotism," the officers agreed, but were puzzled by the grinning of the suppositious patriot.

    New Zealanders at Gallipoli | Major Fred Waite
  • A suppositious example may serve in explanation; only a fact will serve as proof.

    Public Speaking | Clarence Stratton
  • For examples of the two methods let us consider suppositious cases.

    Certain Success | Norval A. Hawkins

British Dictionary definitions for suppositious


/ (ˌsʌpəˈzɪʃəs) /

  1. deduced from supposition; hypothetical

Derived forms of suppositious

  • suppositiously, adverb
  • suppositiousness, 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