Stilbirth or Stillbirth: How To spell?
The word Stilbirth is misspelled against Stillbirth, a noun meaning "The birth of a dead fetus."
Stillbirth has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings sti & birth which should not be misspelled with single 'L'
Wrong Spelling:  sti-l-birth  Correct Spelling:  sti-ll-birth 
Find more wrongly spelled words of Stillbirth to spell it well.