silence
The absence of any sound.
The act of refraining from speaking.
Refraining from speaking, for purposes of prayer or meditation; especially, a form of worship practiced by the {{w|Society of Friends}} (Quakers) during meetings.
To make (someone or something) silent.
To repress the expression of something.
To suppress criticism, etc.
(molecular biology) To block gene expression.
(euphemistic) To murder.
(imperative) Be silent.