Sined or Sinned: How To spell?
The word Sined is misspelled against Sinned, which is past tense of "Sin"
Sinned has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings si & ed which should not be misspelled with single 'N'
Wrong Spelling:  si-n-ed  Correct Spelling:  si-nn-ed 
Find more wrongly spelled words of Sinned to spell it well.