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