mum's the word

Idioms and Phrases

Say nothing about this, it's a secret, as in Mum's the word on tonight's surprise party . This expression dates from about 1700, but mum , meaning “silence,” is much older. In 2 Henry VI (1:2) Shakespeare wrote, “Seal up your lips, and give no words but mum.”

Example Sentences

While mum’s the word for now, Mosher hopes to soon announce good news on the horizon for fans of the restaurant.

From Seattle Times

Mum’s the word on which one will be pictured, but Schultz promised that “you’ll know who it is.”

From Seattle Times

Mum’s the word from the senators in charge of electing Democrats to the upper chamber as they contemplate whether to support Sen. Kyrsten Sinema, the Arizona Democrat-turned-independent, or Democratic challenger Rep. Ruben Gallego.

From Washington Times

Thinking back about those heady days at Crystal Sound, Mesaros points out that the surviving Smithereens are "jazzed about this project because, for the first time, we are producing ourselves, and mum's the word to the outside world. Somehow, it evokes the early days when we were our own best kept secret and a fan club of four."

From Salon

Mum’s the word for now, it seems.

From Science Magazine