Gasing or Gassing: How To spell?
The word Gasing is misspelled against Gassing, a noun meaning "Boasting; insincere or empty talk."
Gassing has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings ga & ing which should not be misspelled with single 'S'
Wrong Spelling:  ga-s-ing  Correct Spelling:  ga-ss-ing 
Find more wrongly spelled words of Gassing to spell it well.