Instarated or Instaurated: How To spell?

The word Instarated is misspelled against Instaurated, which is past tense of "Instaurate"

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

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