Misy or Missy: How To spell?
The word Misy is misspelled against Missy, a noun meaning "An affectionate, or contemptuous, form of miss; a young girl; a miss."
Missy has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings mi & y which should not be misspelled with single 'S'
Wrong Spelling:  mi-s-y  Correct Spelling:  mi-ss-y 
Find more wrongly spelled words of Missy to spell it well.