fateful

Definitions

Having far-reaching and often disastrous consequences or implications.

Controlled or determined by destiny; governed by fate.

Decisive or critical, especially in determining the future.

Examples

It was on that fateful night that he decided to leave his hometown forever.

The fateful decision to delay the project ultimately led to the company's collapse.

Synonyms

decisive consequential momentous destined critical portentous pivotal

Antonyms

insignificant trivial inconsequential unimportant minor negligible