Unecessity or Unnecessity: How To spell?
The word Unecessity is misspelled against Unnecessity, a noun meaning "The state of being unnecessary; something unnecessary."
Unnecessity has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings u & ecessity which should not be misspelled with single 'N'
Wrong Spelling:  u-n-ecessity  Correct Spelling:  u-nn-ecessity 
Find more wrongly spelled words of Unnecessity to spell it well.