Dummy up and Hold down

Dummy up verb - To stop talking.

Hold down and dummy up are semantically related in keep back topic. In some cases you can use "Hold down" instead a verb "Dummy up".

Hold down verb - To set bounds or an upper limit for.

Dummy up and hold down are semantically related in calm topic. Sometimes you can use "Dummy up" instead a verb "Hold down", if it concerns topics such as keep back.