The word Sternnes is misspelled against Sternness, a noun meaning "The quality or state of being stern."
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Sternness 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:  sternne-s 
Correct Spelling:  sternne-ss 
Explore spell check of Sternness to spell without errors.