Semstressy or Seamstressy: How To spell?

The word Semstressy is misspelled against Seamstressy, a noun meaning "The business of a seamstress."

Seamstressy has vowels 'ea' together mispronounced as 'e'
Word contains consecutive vowels 'EA' in between alphabets s & mstressy is misspelled as 'E'
Wrong Spelling:  s-e-mstressy 
Correct Spelling:  s-ea-mstressy 
Explore spell check of Seamstressy to spell without errors.

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