Allothaism or Allotheism: How To spell?

The word Allothaism 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 'AI'
Wrong Spelling:  alloth-ai-sm 
Correct Spelling:  alloth-ei-sm 
Find more incorrect spellings of Allotheism to spell right way.