Tretress or Traitress: How To spell?

The word Tretress is misspelled against Traitress, a noun meaning "A woman who betrays her country or any trust; a traitoress."

Word contains consecutive vowels 'AI' in between alphabets tr & tress is misspelled as 'E'
Wrong Spelling:  tr-e-tress 
Correct Spelling:  tr-ai-tress 
Explore spell check of Traitress to spell without errors.

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