Libreto or Libretto: How To spell?
The word Libreto is misspelled against Libretto, a noun meaning "A book containing the words of an opera or extended piece of music."
Libretto has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings libre & o which should not be misspelled with single 'T'
Wrong Spelling:  libre-t-o  Correct Spelling:  libre-tt-o 
Find more incorrect spellings of Libretto to spell right way.