Dyst or Deist: How To spell?

The word Dyst is misspelled against Deist, meaning "One who believes in God, but denies supernatural revelation."

Word contains consecutive vowels 'EI' in between alphabets d & st is misspelled as 'Y'
Wrong Spelling:  d-y-st 
Correct Spelling:  d-ei-st 
Navigate all incorrect spellings of Deist to spell it right.