Siner or Sinner: How To spell?
The word Siner is misspelled against Sinner, a noun meaning "One who has sinned; especially, one who has sinned without repenting; hence, a persistent and incorrigible transgressor; one condemned by the law of God."
Sinner has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings si & er which should not be misspelled with single 'N'
Wrong Spelling:  si-n-er  Correct Spelling:  si-nn-er 
Find more wrongly spelled words of Sinner to spell it well.