Disyllabify or Dissyllabify: How To spell?
The word Disyllabify is misspelled against Dissyllabify, a verb meaning "To form into two syllables."
Dissyllabify has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings di & yllabify which should not be misspelled with single 'S'
Wrong Spelling:  di-s-yllabify  Correct Spelling:  di-ss-yllabify 
Find more wrongly spelled words of Dissyllabify to spell it well.