Sufocating or Suffocating: How To spell?
The word Sufocating is misspelled against Suffocating, an adjective meaning "from Suffocate, v."
Suffocating has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Su & ocating which should not be misspelled with single 'F'
Wrong Spelling:  Su-f-ocating  Correct Spelling:  Su-ff-ocating 
Check more misspelled words of Suffocating to spell it correct.