Agitation; the state of being perturbed
Variation in an orbit due to the influence of external bodies
A small change in a physical system, or more broadly any definable system (such as a biological or economic system)
The act of refraining from speaking.
deadly silence
The absence of any sound.
Be silent.
To repress the expression of something.
To suppress criticism, etc.
To block gene expression.
To murder.
To make (someone or something) silent.