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