influential
adjectiveUK /ˌɪnfluˈenʃəl/
US /ˌɪnfluˈenʃəl/
Having the power to change how other people think or act.
The teacher was very influential and helped many students love science.
OTHER MEANINGS
2. A person who can change what others do or think.
She became an influential in the local community.
3. Having a strong effect on how something develops.
That influential book changed the way people thought about nature.
4. Able to affect decisions in a group or organization.
He was an influential member of the school council.