Posesival or Possessival: How To spell?
The word Posesival is misspelled against Possessival, an adjective meaning "pertaining to the possessive case; as, a possessival termination."
Possessival has double 'ss' twice appearing mispronounced as 's'Remember double 'SS' appears twice in this word which should not be misspelled with single 'S'
Wrong Spelling:  po-s-e-s-ival  Correct Spelling:  po-ss-e-ss-ival 
Find more incorrect spellings of Possessival to spell right way.