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Thesaurus: supposititious

Fraudulently substituted for something else; not being what is purports to be; not genuine; spurious; counterfeit; as, a supposititious child; a supposititious writing.

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  1. a. Fraudulently substituted for something else; not being what is purports to be; not genuine; spurious; counterfeit; as, a supposititious child; a supposititious writing.
  2. a. Suppositional; hypothetical.
  3. adj. based primarily on surmise rather than adequate evidence
  4. 1. Fraudulently substituted for something else; not being what is purports to be; not genuine; spurious; counterfeit; as, a supposititious child; a supposititious writing. Bacon. 2. Suppositional; hypothetical. [R.] Woodward. -- Sup*pos`i*ti"tious*ly, adv. -- Sup*pos`i*ti"tious*ness, n.
  5. s based primarily on surmise rather than adequate evidence