doomsday

noun

1. 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

   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

2. 2

   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