Often used when someone tries to keep a wrongdoing or mistake secret.

Concealment

The phrase carries a slightly negative tone as it suggests deception or dishonesty.

Negative Connotation

Commonly used in the context of sensitive or potentially scandalous situations.

Used when asking for silence or for reducing noise in a room.

Parents or caretakers use it to soothe or quiet children.

Implies the need for immediate quiet, often in an abrupt manner.