Darein or Darrein: How To spell?
The word Darein is misspelled against Darrein, an adjective meaning "Last; as, darrein continuance, the last continuance."
Darrein has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings da & ein which should not be misspelled with single 'R'
Wrong Spelling:  da-r-ein  Correct Spelling:  da-rr-ein 
Find more wrongly spelled words of Darrein to spell it well.