Sety or Seity: How To spell?

The word Sety is misspelled against Seity, a noun meaning "Something peculiar to one's self."

Word contains consecutive vowels 'EI' in between alphabets s & ty is misspelled as 'E' as letter 'I' is phonetically ignored
Wrong Spelling:  s-e-ty 
Correct Spelling:  s-ei-ty 
Explore spell check of Seity to spell without errors.