Masacred or Massacred: How To spell?
The word Masacred is misspelled against Massacred, which is past tense of "Massacre"
Massacred has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings ma & acred which should not be misspelled with single 'S'
Wrong Spelling:  ma-s-acred  Correct Spelling:  ma-ss-acred 
Explore spell check of Massacred to spell without errors.