Adaptnes or Adaptness: How To spell?
The word Adaptnes is misspelled against Adaptness, a noun meaning "Adaptedness."
Adaptness 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:  adaptne-s  Correct Spelling:  adaptne-ss 
Explore spell check of Adaptness to spell without errors.