0 in a way that causes a lot of destruction or a sudden, violent change:
By a literal interpretation of Plato's chronology, Atlantis was destroyed cataclysmically around 9500-9600 B.C.
Set in an isolated farming community, the plot focuses on a series of characters who become cataclysmically connected.
So it was that we set off along a path which was to end so cataclysmically nine years later.
A project that has been our entire focus for a year and a half has been cataclysmically unsuccessful.
During a cataclysmically destructive event, an observant bystander happened to be in the right place at the right time.
