Allothaysm or Allotheism: How To spell?

The word Allothaysm is misspelled against Allotheism, a noun meaning "The worship of strange gods."

Word contains consecutive vowels 'EI' in between alphabets alloth & sm is misspelled as 'AY'
Wrong Spelling:  alloth-ay-sm 
Correct Spelling:  alloth-ei-sm 
Find more incorrect spellings of Allotheism to spell right way.