- Fraudulently substituted for something else; not
being what is purports to be; not genuine; spurious; counterfeit; as, a
supposititious child; a supposititious writing. - Suppositional; hypothetical.
Meaning of 'supposititious' (Princeton's WordNet)
1 . supposititious
[ s]
Meaning (1): - based primarily on surmise rather than adequate evidence
Example in sentence:
hypothetical situation;
suppositious reconstructions of dead languages;
the supposed reason for his absence;
theories about the extinction of dinosaurs are still highly conjectural