Stoper or Stopper: How To spell?
The word Stoper is misspelled against Stopper, a noun meaning "A name to several trees of the genus Eugenia, found in Florida and the West Indies; as, the red stopper. See Eugenia."
Stopper has double "pp" is mispronounced as "p"Remember double 'PP' in between the strings sto & er which should not be misspelled with single 'P'
Wrong Spelling:  sto-p-er  Correct Spelling:  sto-pp-er 
Find more incorrect spellings of Stopper to spell right way.