Curiousnes or Curiousness: How To spell?
The word Curiousnes is misspelled against Curiousness, a noun meaning "Carefulness; painstaking."
Curiousness 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:  curiousne-s  Correct Spelling:  curiousne-ss 
Check more misspelled words of Curiousness to spell it correct.