Concusive or Concussive: How To spell?
The word Concusive is misspelled against Concussive, an adjective meaning "Having the power or quality of shaking or agitating."
Concussive has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings concu & ive which should not be misspelled with single 'S'
Wrong Spelling:  concu-s-ive  Correct Spelling:  concu-ss-ive 
Check more misspelled words of Concussive to spell it correct.