Nonecessity or Nonnecessity: How To spell?
The word Nonecessity is misspelled against Nonnecessity, a noun meaning "Absence of necessity; the quality or state of being unnecessary."
Nonnecessity has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings no & ecessity which should not be misspelled with single 'N'
Wrong Spelling:  no-n-ecessity  Correct Spelling:  no-nn-ecessity 
Find more incorrect spellings of Nonnecessity to spell right way.