Muzling or Muzzling: How To spell?
The word Muzling is misspelled against Muzzling, which is present continuous of "Muzzle"
Muzzling has double "zz" is mispronounced as "z"Remember double 'ZZ' in between the strings mu & ling which should not be misspelled with single 'Z'
Wrong Spelling:  mu-z-ling  Correct Spelling:  mu-zz-ling 
Check more misspelled words of Muzzling to spell it correct.