Clam up
Clam up verb - To stop talking.
Usage example: the little girl clammed up when the doctor came into the room
Calm
Calm verb - To free from distress or disturbance.
Mutual synonyms
Cite this Source
Calm and Clam up. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/clam_up/calm
Clam up & Calm. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/clam_up/calm>.
Calm or Clam up. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/clam_up/calm.
Google Ngram Viewer shows how "clam up" and "calm" have occurred on timeline