Astausm or Asteism: How To spell?

The word Astausm is misspelled against Asteism, a noun meaning "Genteel irony; a polite and ingenious manner of deriding another."

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