not tell a soul

I'd never live that one down, even if neither of them told a single soul.

At the same time, I resolved not to tell a soul about my plans until everything was final.

For ten years now, simple shame had kept her from telling a soul.

Do not tell a soul until Thursday when all will be over.

Warned me not to tell a soul about her house out there.

I hope you don't mind, for I'll never tell a soul.

Which is why you can't tell a soul about me.

At this point we don't have to tell a soul what it's about.

Don't tell a soul you were here, last night or today.

He had yet to tell a soul that the theory was now complete.