Shintism or Shintiism: How To spell?

The word Shintism is misspelled against Shintiism, a noun meaning "One of the two great systems of religious belief in Japan. Its essence is ancestor worship, and sacrifice to dead heroes."

Shintiism has double "ii" is mispronounced as "i"
Remember double 'II' in between the strings shint & sm which should not be misspelled with single 'I'
Wrong Spelling:  shint-i-sm 
Correct Spelling:  shint-ii-sm 
Find more wrongly spelled words of Shintiism to spell it well.