Couponize or Cauponize: How To spell?

The word Couponize is misspelled against Cauponize, a verb meaning "To sell wine or victuals."

Word contains consecutive vowels 'AU' in between alphabets c & ponize is misspelled as 'OU'
Wrong Spelling:  c-ou-ponize 
Correct Spelling:  c-au-ponize 
Check more misspelled words of Cauponize to spell it correct.

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