Rightnes or Rightness: How To spell?
The word Rightnes is misspelled against Rightness, a noun meaning "Straightness; as, the rightness of a line."
Rightness 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:  rightne-s  Correct Spelling:  rightne-ss 
Find more wrongly spelled words of Rightness to spell it well.