Mufing or Muffing: How To spell?

The word Mufing is misspelled against Muffing, which is present continuous of "Muff"

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