Calidity or Callidity: How To spell?

The word Calidity is misspelled against Callidity, a noun meaning "Acuteness of discernment; cunningness; shrewdness."

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