The word Afixing is misspelled against Affixing, which is present continuous of "Affix"
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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.