Omisible or Omissible: How To spell?
The word Omisible is misspelled against Omissible, an adjective meaning "Capable of being omitted; that may be omitted."
Omissible has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings omi & ible which should not be misspelled with single 'S'
Wrong Spelling:  omi-s-ible  Correct Spelling:  omi-ss-ible 
Find more wrongly spelled words of Omissible to spell it well.