Quicknes or Quickness: How To spell?
The word Quicknes is misspelled against Quickness, a noun meaning "Activity; briskness; especially, rapidity of motion; speed; celerity; as, quickness of wit."
Quickness 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:  quickne-s  Correct Spelling:  quickne-ss 
Check more misspelled words of Quickness to spell it correct.