'Keep quiet' is translated 'tiens-toi tranquille' in French.
You are quiet is 'tu es tranquille / tu es calme' in French.
The correct spelling is "quiet" (silent, or hushed).
ami tranquille
Vous êtes tranquille.
la mort tranquille
une pièce silencieuse
être Mexicains calme.
Just keep quiet.
"Le maintenir" is to say keep it up in French....
say shut up
Both.
ān jing3 安靜 in traditional.