Athaust or Atheist: How To spell?

The word Athaust is misspelled against Atheist, a noun meaning "A godless person."

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