Heavyweight
Meaning: a person who is important and influential; a leader in a particular field
Example: The two important and well-known authors John Steinbeck and Ernest Hemingway are heavyweights in American literature. You cannot dismiss the importance and influence of heavyweight Steven Spielberg on the movie industry.
Example: The two important and well-known authors John Steinbeck and Ernest Hemingway are heavyweights in American literature. You cannot dismiss the importance and influence of heavyweight Steven Spielberg on the movie industry.
