Parnasus or Parnassus: How To spell?
The word Parnasus is misspelled against Parnassus, a noun meaning "A mountain in Greece, sacred to Apollo and the Muses, and famous for a temple of Apollo and for the Castalian spring."
Parnassus has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings parna & us which should not be misspelled with single 'S'
Wrong Spelling:  parna-s-us  Correct Spelling:  parna-ss-us 
Check more misspelled words of Parnassus to spell it correct.