Colness or Coolness: How To spell?
The word Colness is misspelled against Coolness, a noun meaning "Calm impudence; self-possession."
Coolness has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings c & lness which should not be misspelled with single 'O'
Wrong Spelling:  c-o-lness  Correct Spelling:  c-oo-lness 
Find more incorrect spellings of Coolness to spell right way.