Tavtologize or Tautologize: How To spell?

The word Tavtologize is misspelled against Tautologize, a verb meaning "To repeat the same thing in different words."

Word contains consecutive vowels 'AU' in between alphabets t & tologize is misspelled as 'AV'
Wrong Spelling:  t-av-tologize 
Correct Spelling:  t-au-tologize 
Find more incorrect spellings of Tautologize to spell right way.

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