a big name/noise

a big noise

An important, successful, or influential person. Did you hear that Kelly got promoted to senior analyst? She's a big noise now.
See also: big, noise

a big ˈname/ˈnoise

,

a ˈbig shot

(informal) an important person: ‘What does Ian’s dad do?’ ‘Oh, he’s a big shot in the City.’ OPPOSITE: small fry
See also: big, name, noise