Niperkin or Nipperkin: How To spell?
The word Niperkin is misspelled against Nipperkin, a noun meaning "A small cup."
Nipperkin has double "pp" is mispronounced as "p"Remember double 'PP' in between the strings ni & erkin which should not be misspelled with single 'P'
Wrong Spelling:  ni-p-erkin  Correct Spelling:  ni-pp-erkin 
Find more wrongly spelled words of Nipperkin to spell it well.