doomsday in WordNet English dictionary

1. (New Testament) day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
   Judgment Day  Judgement Day  Day of Judgment  Day of Judgement  Doomsday  Last Judgment  Last Judgement  Last Day  eschaton  day of reckoning  doomsday  crack of doom  end of the world 
   
2. (New Testament) day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
   Judgment Day  Judgement Day  Day of Judgment  Day of Judgement  Doomsday  Last Judgment  Last Judgement  Last Day  eschaton  day of reckoning  doomsday  crack of doom  end of the world 
   
3. an unpleasant or disastrous destiny
   "everyone was aware of the approaching doom but was helpless to avoid it"; "that's unfortunate but it isn't the end of the world"
   doom  doomsday  day of reckoning  end of the world