Septisylable or Septisyllable: How To spell?
The word Septisylable is misspelled against Septisyllable, a noun meaning "A word of seven syllables."
Septisyllable has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings septisy & able which should not be misspelled with single 'L'
Wrong Spelling:  septisy-l-able  Correct Spelling:  septisy-ll-able 
Find more wrongly spelled words of Septisyllable to spell it well.