Afixing or Affixing: How To spell?
The word Afixing is misspelled against Affixing, which is present continuous of "Affix"
Affixing has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings A & ixing which should not be misspelled with single 'F'
Wrong Spelling:  A-f-ixing  Correct Spelling:  A-ff-ixing 
Find more wrongly spelled words of Affixing to spell it well.