Cater or Cauter: How To spell?

The word Cater is misspelled against Cauter, a noun meaning "A hot iron for searing or cauterizing."

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

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