influential - definition and synonyms

 
 
adjective 

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/ˌɪnfluˈenʃ(ə)l/
  1. able to influence the way other people think or behave

    He is one of the most influential figures in the government.

    The study looks at the influential role of professional athletes in public life.

    very/highly influential:

    a highly influential book

    be influential in doing something:

    She was extremely influential in raising people’s awareness of the disease.