unpreventable

/ˌʌnprɪˈvɛntəbəl/

There's no way to keep something unpreventable from happening. Getting to school late is unpreventable if the bus gets a flat tire on the way there!

You can't prevent things that are unpreventable. Rain that spoils a planned beach outing, growing older, getting dizzy on an amusement park ride that spins you in a circle: all of these are unpreventable. And while some diseases are currently unpreventable, like ALS and asthma, many can be prevented by washing your hands, regularly exercising, and getting vaccinated.

Definitions of unpreventable

1. adjective

   not preventable
   “unpreventable hysteria”

   antonyms:

   preventable

   capable of being prevented