Inefervescent or Ineffervescent: How To spell?
The word Inefervescent is misspelled against Ineffervescent, an adjective meaning "Not effervescing, or not susceptible of effervescence; quiescent."
Ineffervescent has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Ine & ervescent which should not be misspelled with single 'F'
Wrong Spelling:  Ine-f-ervescent  Correct Spelling:  Ine-ff-ervescent 
Explore spell check of Ineffervescent to spell without errors.