Suposititious or Supposititious: How To spell?
The word Suposititious is misspelled against Supposititious, an adjective meaning "Fraudulently substituted for something else; not being what is purports to be; not genuine; spurious; counterfeit; as, a supposititious child; a supposititious writing."
Supposititious has double "pp" is mispronounced as "p"Remember double 'PP' in between the strings su & osititious which should not be misspelled with single 'P'
Wrong Spelling:  su-p-osititious  Correct Spelling:  su-pp-osititious 
Check more misspelled words of Supposititious to spell it correct.