Aptnes or Aptness: How To spell?
The word Aptnes is misspelled against Aptness, a noun meaning "Disposition of the mind; propensity; as, the aptness of men to follow example."
Aptness 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:  aptne-s  Correct Spelling:  aptne-ss 
Explore spell check of Aptness to spell without errors.