Straightnes or Straightness: How To spell?
The word Straightnes is misspelled against Straightness, a noun meaning "A variant of Straitness."
Straightness 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:  straightne-s  Correct Spelling:  straightne-ss 
Find more wrongly spelled words of Straightness to spell it well.