Coolnes or Coolness: How To spell?
The word Coolnes is misspelled against Coolness, a noun meaning "Calm impudence; self-possession."
Coolness 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:  coolne-s  Correct Spelling:  coolne-ss 
Find more incorrect spellings of Coolness to spell right way.