Clam up and Dummy up

Clam up

Clam up verb - To stop talking.
Usage example: the little girl clammed up when the doctor came into the room

Dummy up is a synonym for clam up in calm topic. In some cases you can use "Dummy up" instead a verb "Clam up", when it comes to topics like silence, keep back, make or be quiet. popular alternative

Dummy up

Dummy up verb - To stop talking.
Usage example: all of a sudden the suspect just dummied up and demanded the presence of an attorney

Clam up is a synonym for dummy up in calm topic. You can use "Clam up" instead a verb "Dummy up", if it concerns topics such as silence, keep back, make or be quiet. popular alternative
Cite this Source
Dummy up and Clam up. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/clam_up/dummy_up
Clam up & Dummy up. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/clam_up/dummy_up>.
Dummy up or Clam up. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/clam_up/dummy_up.
Google Ngram Viewer shows how "clam up" and "dummy up" have occurred on timeline