Necesarian or Necessarian: How To spell?
The word Necesarian is misspelled against Necessarian, a noun meaning "An advocate of the doctrine of philosophical necessity; a nacessitarian."
Necessarian has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings nece & arian which should not be misspelled with single 'S'
Wrong Spelling:  nece-s-arian  Correct Spelling:  nece-ss-arian 
Find more wrongly spelled words of Necessarian to spell it well.