catastrophic

comparative more catastrophic · superlative most catastrophic

1. Of or pertaining to a catastrophe.
2. Disastrous; ruinous.

   Some experts, such as geographer Jared Diamond in his 2005 book, “Collapse,” used Easter Island as a cautionary tale of how the exploitation of limited resources can result in catastrophic population decline, ecological devastation and the destruction of a society through infighting.

   2024 September 14, Katie Hunt, “New evidence upends contentious Easter Island theory, scientists say”, in CNN, archived from the original on 21 Sep 2024

   1 more example

   The reason why Jon & Kate Plus 8 is such a hot topic is because it might all be a sham. It’s been claimed that Jon has a string of mistresses, that Kate had an affair with her bodyguard and that Baby Number Six is actually a shaved Ewok with a catastrophic heroin addiction. Or something.

   2009 May 22, Stuart Heritage, “Jon & Kate Latest: People You Don’t Know Do Crap You Don’t Care About”, in Hecklerspray, archived from the original on 15 Apr 2024

3. From which recovery is impossible.

   catastrophic failure