bigwig

/ˈbɪɡˌwɪɡ/
noun
  1. An important or influential person, especially in a particular field or organization.
    • The company's bigwigs gathered for a meeting to discuss the new project.
    • Local bigwigs attended the charity gala to show their support.
    • He acted like a bigwig, but nobody really knew who he was.
Antonyms
What does "bigwig" mean? | whatsthatwordmean | whatsthatwordmean