• synonyms


[suh-poz-i-tish-uh s]
See more synonyms for supposititious on Thesaurus.com
  1. fraudulently substituted or pretended; spurious; not genuine.
  2. hypothetical.
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Origin of supposititious

1605–15; < Latin suppositīcius, equivalent to supposit(us) (past participle of suppōnere; see supposition) + -īcius -itious
Related formssup·pos·i·ti·tious·ly, adverbsup·pos·i·ti·tious·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for supposititious

Historical Examples

  • He might put the supposititious case of a friend, and ask what the friend ought to do.

    One Day's Courtship

    Robert Barr

  • Argument is at an end when supposititious miracle is introduced.

  • What if the Zohar should prove not to be genuine, but only a supposititious work?

  • Chambers's Encyclopdia rejects the work also as supposititious.

  • The first gun was that popular device, a supposititious question.

British Dictionary definitions for supposititious


  1. substituted with intent to mislead or deceive
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Derived Formssupposititiously, adverbsupposititiousness, 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