Heartednes or Heartedness: How To spell?
The word Heartednes is misspelled against Heartedness, a noun meaning "Earnestness; sincerity; heartiness."
Heartedness 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:  heartedne-s  Correct Spelling:  heartedne-ss 
Explore spell check of Heartedness to spell without errors.