Betternes or Betterness: How To spell?

The word Betternes is misspelled against Betterness, a noun meaning "The difference by which fine gold or silver exceeds in fineness the standard."

--> Betterness 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:  betterne-s 
Correct Spelling:  betterne-ss 
Explore spell check of Betterness to spell without errors.

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