1. having great influence on someone or something; having the power to cause changes

Examples

• She is one of the most influential politicians in the country.
• The book was influential in changing public opinion about climate change.
• His influential family helped him get the job.
• The teacher was influential in shaping her students’ career choices.
• Social media has become increasingly influential in modern society.
• The influential businessman donated millions to charity.
• Her influential speech convinced many people to vote for the proposal.