Adeptnes or Adeptness: How To spell?

The word Adeptnes is misspelled against Adeptness, a noun meaning "The quality of being adept; skill."

Adeptness 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:  adeptne-s 
Correct Spelling:  adeptne-ss 
Explore spell check of Adeptness to spell without errors.

You might be interested to know

Amativenes or Amativeness?

Apronles or Apronless?

Barones or Baroness?