decisive role

Translations
решающая роль
Her leadership played a decisive role in the project's success.
Ее лидерство сыграло решающую роль в успехе проекта.
Definitions
A decisive role refers to a position or function that has a significant impact on the outcome of a situation or decision, often determining the direction or result of events.
Words
decisive

adjective
решающую
role

noun
роль