Irremisive or Irremissive: How To spell?
The word Irremisive is misspelled against Irremissive, an adjective meaning "Not remitting; unforgiving."
Irremissive has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings irremi & ive which should not be misspelled with single 'S'
Wrong Spelling:  irremi-s-ive  Correct Spelling:  irremi-ss-ive 
Find more wrongly spelled words of Irremissive to spell it well.