In the past, a quiet word would have solved the problem.

"May I have one quiet word with him in the hall?"

In the silence that followed the President's quiet words were clearly heard by all present.

Someone had a quiet word with them too, we assume.

Whatever else happens don't get talked into being the one to have a quiet word.

The words quiet, space, and nature play an important role.

Everyone stay put here while I go and have a quiet word with him.

When all they needed to do was lift up the phone and have a quiet word.

At last the young man choked out a few quiet words.

"Mind if I give you one quiet word of warning between old friends?"