Sotiness or Sootiness: How To spell?
The word Sotiness is misspelled against Sootiness, a noun meaning "The quality or state of being sooty; fuliginousness."
Sootiness has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings s & tiness which should not be misspelled with single 'O'
Wrong Spelling:  s-o-tiness  Correct Spelling:  s-oo-tiness 
Find more incorrect spellings of Sootiness to spell right way.