Manichyism or Manicheism: How To spell?
The word Manichyism is misspelled against Manicheism, a noun meaning "The doctrines taught, or system of principles maintained, by the Manichaeans."
Word contains consecutive vowels 'EI' in between alphabets manich & sm is misspelled as 'YI'Wrong Spelling:  manich-yi-sm  Correct Spelling:  manich-ei-sm 
Find more wrongly spelled words of Manicheism to spell it well.