Overtoping or Overtopping: How To spell?
The word Overtoping is misspelled against Overtopping, which is present continuous of "Overtop"
Overtopping has double "pp" is mispronounced as "p"Remember double 'PP' in between the strings overto & ing which should not be misspelled with single 'P'
Wrong Spelling:  overto-p-ing  Correct Spelling:  overto-pp-ing 
Find more incorrect spellings of Overtopping to spell right way.