unavoidable

adjective
1

Impossible to avoid; bound to happen.

"an unavoidable urge"

2

Not voidable; incapable of being made null or void.

noun
1

Something that cannot be avoided.

Source: https://en.wiktionary.org/wiki/unavoidable

Definitions come from the Free Dictionary API (dictionaryapi.dev), with Wiktionary as a fallback when it is slow, and are cached for up to 24 hours.