Felness or Fellness: How To spell?

The word Felness is misspelled against Fellness, a noun meaning "The quality or state of being fell or cruel; fierce barbarity."

Fellness has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings fe & ness which should not be misspelled with single 'L'
Wrong Spelling:  fe-l-ness 
Correct Spelling:  fe-ll-ness 
Explore spell check of Fellness to spell without errors.