Asertorial or Assertorial: How To spell?
The word Asertorial is misspelled against Assertorial, an adjective meaning "Asserting that a thing is; -- opposed to problematical and apodeictical."
Assertorial has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings a & ertorial which should not be misspelled with single 'S'
Wrong Spelling:  a-s-ertorial  Correct Spelling:  a-ss-ertorial 
Find more incorrect spellings of Assertorial to spell right way.