The word Discusing is misspelled against Discussing, which is present continuous of "Discuss"
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Discussing has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings discu & ing which should not be misspelled with single 'S'
Wrong Spelling: discu-s-ing
Correct Spelling: discu-ss-ing
Check more misspelled words of Discussing to spell it correct.