pivotal in a sentence

Definition

PIVOTAL: of crucial importance in relation to the development or success of something.

The scientist played a pivotal role in the discovery of the new treatment.
Her decision to move abroad was pivotal in shaping her career path.
The pivotal moment in the film left the audience in stunned silence.
Understanding the pivotal concepts in the subject is essential for success.
The team's pivotal victory boosted their confidence for the rest of the season.