Fizling or Fizzling: How To spell?
The word Fizling is misspelled against Fizzling, which is present continuous of "Fizzle"
Fizzling has double "zz" is mispronounced as "z"Remember double 'ZZ' in between the strings fi & ling which should not be misspelled with single 'Z'
Wrong Spelling:  fi-z-ling  Correct Spelling:  fi-zz-ling 
Find more wrongly spelled words of Fizzling to spell it well.