Permisibility or Permissibility: How To spell?
The word Permisibility is misspelled against Permissibility, a noun meaning "The quality of being permissible; permissibleness; allowableness."
Permissibility has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings permi & ibility which should not be misspelled with single 'S'
Wrong Spelling:  permi-s-ibility  Correct Spelling:  permi-ss-ibility 
Find more wrongly spelled words of Permissibility to spell it well.