Siliness or Silliness: How To spell?
The word Siliness is misspelled against Silliness, a noun meaning "The quality or state of being silly."
Silliness has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings si & iness which should not be misspelled with single 'L'
Wrong Spelling:  si-l-iness  Correct Spelling:  si-ll-iness 
Find more wrongly spelled words of Silliness to spell it well.