Boniness or Bonniness: How To spell?
The word Boniness is misspelled against Bonniness, a noun meaning "The quality of being bonny; gayety; handsomeness."
Bonniness has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings bo & iness which should not be misspelled with single 'N'
Wrong Spelling:  bo-n-iness  Correct Spelling:  bo-nn-iness 
Find more incorrect spellings of Bonniness to spell right way.