Preternity or Preeternity: How To spell?
The word Preternity is misspelled against Preeternity, a noun meaning "Infinite previous duration."
Preeternity has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Pr & ternity which should not be misspelled with single 'E'
Wrong Spelling:  Pr-e-ternity  Correct Spelling:  Pr-ee-ternity 
Find more wrongly spelled words of Preeternity to spell it well.