Acidentalness or Accidentalness: How To spell?
The word Acidentalness is misspelled against Accidentalness, a noun meaning "The quality of being accidental; casualness."
Accidentalness has double "cc" is mispronounced as "c"Remember double 'CC' in between the strings A & identalness which should not be misspelled with single 'C'
Wrong Spelling:  A-c-identalness  Correct Spelling:  A-cc-identalness 
Find more wrongly spelled words of Accidentalness to spell it well.