- Having great influence on someone or something.
- Having the power to produce an effect or influence others.
Mid 17th century: from medieval latin influentia "a flowing in" (in the sense "the power of flowing in", i.e. an astrological influence), from latin influere "flow in".
- The influential politician had a major impact on the country's policies.
- The influential book sparked a nationwide debate.
- The influential leader was a role model for many young people.
- The influential film inspired a new generation of filmmakers.
- The influential song became an anthem for the youth culture.