Stilness or Stillness: How To spell?

The word Stilness is misspelled against Stillness, a noun meaning "Habitual silence or quiet; taciturnity."

Stillness has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings sti & ness which should not be misspelled with single 'L'
Wrong Spelling:  sti-l-ness 
Correct Spelling:  sti-ll-ness 
Find more wrongly spelled words of Stillness to spell it well.