Thereyfter or Thereafter: How To spell?

The word Thereyfter is misspelled against Thereafter, an adverb meaning "According to that; accordingly."

Thereafter has vowels 'ea' together mispronounced as 'ey'
Word contains consecutive vowels 'EA' in between alphabets ther & fter is misspelled as 'EY'
Wrong Spelling:  ther-ey-fter 
Correct Spelling:  ther-ea-fter 
Explore spell check of Thereafter to spell without errors.

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