Sicknes or Sickness: How To spell?
The word Sicknes is misspelled against Sickness, a noun meaning "Nausea; qualmishness; as, sickness of stomach."
Sickness 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:  sickne-s  Correct Spelling:  sickne-ss 
Find more wrongly spelled words of Sickness to spell it well.