doomsday

Definitions of doomsday
  1. noun
    (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
  2. noun
    an unpleasant or disastrous destiny
    synonyms: day of reckoning, doom, end of the world
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    type of:
    destiny, fate
    an event (or a course of events) that will inevitably happen in the future
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