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