Fatress or Fautress: How To spell?

The word Fatress is misspelled against Fautress, a noun meaning "A patroness."

Word contains consecutive vowels 'AU' in between alphabets f & tress is misspelled as 'A' as letter 'U' is phonetically ignored
Wrong Spelling:  f-a-tress 
Correct Spelling:  f-au-tress 
Explore spell check of Fautress to spell without errors.

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