Nincompop or Nincompoop: How To spell?
The word Nincompop is misspelled against Nincompoop, a noun meaning "A fool; a silly or stupid person."
Nincompoop has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings nincomp & p which should not be misspelled with single 'O'
Wrong Spelling:  nincomp-o-p  Correct Spelling:  nincomp-oo-p 
Find more incorrect spellings of Nincompoop to spell right way.