Acidence or Accidence: How To spell?
The word Acidence is misspelled against Accidence, a noun meaning "The accidents, of inflections of words; the rudiments of grammar."
Accidence has double "cc" is mispronounced as "c"Remember double 'CC' in between the strings A & idence which should not be misspelled with single 'C'
Wrong Spelling:  A-c-idence  Correct Spelling:  A-cc-idence 
Find more wrongly spelled words of Accidence to spell it well.