Mufling or Muffling: How To spell?

The word Mufling is misspelled against Muffling, which is present continuous of "Muffle"

Muffling has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Mu & ling which should not be misspelled with single 'F'
Wrong Spelling: Mu-f-ling
Correct Spelling: Mu-ff-ling
Check more misspelled words of Muffling to spell it correct.