Don't tell anyone where you're going.

Keep your mouth shut.

Please don't tell anybody.

We keep it to ourselves.

Can you keep quiet about it?

You can't trust anybody.

I promise not to tell anyone.

- It's a secret. I'm not sure if I can trust you and lay it all out. / Это секрет. Не уверен, что могу тебе доверять и всё выложить.

- You can trust for sure. I promise not to tell anyone. / Ты можешь мне доверять. Обещаю никому не говорить.

not a word to anyone

Do you hear me? Not a word about this to anyone. / Ты меня слышишь? Об этом никому ни слова.

No one wants you here.

Don't tell anyone where you're going.