The word Swarthnes is misspelled against Swarthness, a noun meaning "Swarthiness."
-->
Swarthness 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:  swarthne-s 
Correct Spelling:  swarthne-ss 
Explore spell check of Swarthness to spell without errors.