The word Aggresing is misspelled against Aggressing, which is present continuous of "Aggress"
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Aggressing has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings aggre & ing which should not be misspelled with single 'S'
Wrong Spelling:  aggre-s-ing 
Correct Spelling:  aggre-ss-ing 
Find more wrongly spelled words of Aggressing to spell it well.