Imperfectnes or Imperfectness: How To spell?

The word Imperfectnes is misspelled against Imperfectness, a noun meaning "The state of being imperfect."

--> Imperfectness has double 'ss' in the end mispronounced as 's'
Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  imperfectne-s 
Correct Spelling:  imperfectne-ss 
Explore spell check of Imperfectness to spell without errors.

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