Empty, confused, or exaggerated talk lacking meaning or substance; bluster.
Air that has been heated, especially so as to function as the lifting agent of a hot-air balloon.
The act of refraining from speaking.
deadly silence
The absence of any sound.
To repress the expression of something.
To suppress criticism, etc.
To block gene expression.
To murder.
To make (someone or something) silent.
Be silent.