Restifness or Restiffness: How To spell?

The word Restifness is misspelled against Restiffness, a noun meaning "Restiveness."

Restiffness has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Resti & ness which should not be misspelled with single 'F'
Wrong Spelling:  Resti-f-ness 
Correct Spelling:  Resti-ff-ness 
Find more wrongly spelled words of Restiffness to spell it well.

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