hold your peace/tongue
hold one's peace
to remain silent. Bill was unable to hold his peace any longer. "Don't do it!" he cried. Quiet, John. Hold your peace for a little while longer.
hold one's tongue
Fig. to refrain from speaking; to refrain from saying something unpleasant. I felt like scolding her, but I held my tongue. Hold your tongue, John. You can't talk to me that way!
hold your tongue
If you hold your tongue, you do not speak. Douglas held his tongue, preferring not to speak out on a politically sensitive issue. Note: People sometimes say hold your tongue as an angry way of telling someone to be quiet. `Hold your tongue, woman,' he had warned her furiously.