Ilapsable or Illapsable: How To spell?

The word Ilapsable is misspelled against Illapsable, an adjective meaning "Incapable of slipping, or of error."

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