Cataclysmic

Of or pertaining to a <a href="https://en.m.wiktionary.org/wiki/cataclysm" title="cataclysm" style="margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; line-height: inherit; font-family: "Helvetica Neue", Helvetica, "Nimbus Sans L", Arial, "Liberation Sans", sans-serif; vertical-align: baseline; background: none rgb(255, 255, 255); color: rgb(107, 75, 161);">cataclysm</a>; causing great <a href="https://en.m.wiktionary.org/wiki/destruction" title="destruction" style="margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; line-height: inherit; font-family: "Helvetica Neue", Helvetica, "Nimbus Sans L", Arial, "Liberation Sans", sans-serif; vertical-align: baseline; background: none rgb(255, 255, 255); color: rgb(107, 75, 161);">destruction</a> or <a href="https://en.m.wiktionary.org/wiki/upheaval" title="upheaval" style="margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; line-height: inherit; font-family: "Helvetica Neue", Helvetica, "Nimbus Sans L", Arial, "Liberation Sans", sans-serif; vertical-align: baseline; background: none rgb(255, 255, 255); color: rgb(107, 75, 161);">upheaval</a>; <a href="https://en.m.wiktionary.org/wiki/catastrophic" title="catastrophic" style="margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; line-height: inherit; font-family: "Helvetica Neue", Helvetica, "Nimbus Sans L", Arial, "Liberation Sans", sans-serif; vertical-align: baseline; background: none rgb(255, 255, 255); color: rgb(107, 75, 161);">catastrophic</a>.