Addresing or Addressing: How To spell?
The word Addresing is misspelled against Addressing, which is present continuous of "Address"
Addressing has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings addre & ing which should not be misspelled with single 'S'
Wrong Spelling:  addre-s-ing  Correct Spelling:  addre-ss-ing 
Find more wrongly spelled words of Addressing to spell it well.