Indiferentism or Indifferentism: How To spell?
The word Indiferentism is misspelled against Indifferentism, a noun meaning "A heresy consisting in an unconcern for any particular creed, provided the morals be right and good."
Indifferentism has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Indi & erentism which should not be misspelled with single 'F'
Wrong Spelling:  Indi-f-erentism  Correct Spelling:  Indi-ff-erentism 
Find more wrongly spelled words of Indifferentism to spell it well.