Disafirm or Disaffirm: How To spell?
The word Disafirm is misspelled against Disaffirm, a verb meaning "To assert the contrary of; to contradict; to deny; -- said of that which has been asserted."
Disaffirm has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Disa & irm which should not be misspelled with single 'F'
Wrong Spelling:  Disa-f-irm  Correct Spelling:  Disa-ff-irm 
Find more wrongly spelled words of Disaffirm to spell it well.