Athausm or Atheism: How To spell?

The word Athausm is misspelled against Atheism, meaning "The denial of the existence of God."

Word contains consecutive vowels 'EI' in between alphabets ath & sm is misspelled as 'AU'
Wrong Spelling:  ath-au-sm 
Correct Spelling:  ath-ei-sm 
Check more misspelled words of Atheism to spell it correct.