Discused or Discussed: How To spell?
The word Discused is misspelled against Discussed, which is past tense of "Discuss"
Discussed has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings discu & ed which should not be misspelled with single 'S'
Wrong Spelling:  discu-s-ed  Correct Spelling:  discu-ss-ed 
Check more misspelled words of Discussed to spell it correct.