Difluency or Diffluency: How To spell?
The word Difluency is misspelled against Diffluency, a noun meaning "A flowing off on all sides; fluidity."
Diffluency has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Di & luency which should not be misspelled with single 'F'
Wrong Spelling:  Di-f-luency  Correct Spelling:  Di-ff-luency 
Check more misspelled words of Diffluency to spell it correct.