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