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