Mispending or Misspending: How To spell?
The word Mispending is misspelled against Misspending, which is present continuous of "Misspend"
Misspending has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings mi & pending which should not be misspelled with single 'S'
Wrong Spelling:  mi-s-pending  Correct Spelling:  mi-ss-pending 
Find more wrongly spelled words of Misspending to spell it well.