Multisylable or Multisyllable: How To spell?
The word Multisylable is misspelled against Multisyllable, a noun meaning "A word of many syllables; a polysyllable."
Multisyllable has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings multisy & able which should not be misspelled with single 'L'
Wrong Spelling:  multisy-l-able  Correct Spelling:  multisy-ll-able 
Check more misspelled words of Multisyllable to spell it correct.