Quizing or Quizzing: How To spell?

The word Quizing is misspelled against Quizzing, which is present continuous of "Quiz"

--> Quizzing has double "zz" is mispronounced as "z"
Remember double 'ZZ' in between the strings qui & ing which should not be misspelled with single 'Z'
Wrong Spelling:  qui-z-ing 
Correct Spelling:  qui-zz-ing 
Check more misspelled words of Quizzing to spell it correct.

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