Mr. Big

noun

Slang.

1. a man having the highest authority, control, prestige, or influence in a group, field, situation, or the like, especially in the underworld.

Mr Big

noun

1. slang,  the head of an organization, esp of a criminal organization

Word History and Origins

Origin of Mr. Big¹

First recorded in 1935–40

Example Sentences

Mr. Big’s exit hurt, but it did not assault our eyeballs.

From Salon

The two women actually confirmed their relationship in February in a slightly profane TikTok interview with a man who goes by the name Mr. Big, but the video appears to have passed mostly under the radar until now because neither person named herself.

From Los Angeles Times

The chat started with a question about their worst dates then segued into Mr. Big asking what the two expect from a guy on a first date.

From Los Angeles Times

“You” performer Camp did mention that she was an actor, but Mr. Big didn’t follow up.

From Los Angeles Times

"We think that the 'Mr Big' is probably a faceless commuter. I do not know him."

From BBC