Invalidnes or Invalidness: How To spell?

The word Invalidnes is misspelled against Invalidness, a noun meaning "Invalidity; as, the invalidness of reasoning."

--> Invalidness 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:  invalidne-s 
Correct Spelling:  invalidne-ss 
Find more wrongly spelled words of Invalidness to spell it well.

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