• 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

Related Words for supposititious

alleged, apparent, conjectural, hypothetic, hypothetical, inferential, likely, presumptive, suppositional, suppositious, suppositive, asserted, presumed, purported, affected, assumed, bent, bogus, brummagem, crock

Examples from the Web for supposititious

Historical Examples of supposititious

  • 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