The word Blufness is misspelled against Bluffness, a noun meaning "The quality or state of being bluff."
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Bluffness has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Blu & ness which should not be misspelled with single 'F'
Wrong Spelling:  Blu-f-ness 
Correct Spelling:  Blu-ff-ness 
Check more misspelled words of Bluffness to spell it correct.