Clam up
Clam up verb - To stop talking.
Usage example: the little girl clammed up when the doctor came into the room
Cool down
Cool down verb - Make cool or cooler.
Mutual synonyms
Cite this Source
Cool down and Clam up. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/clam_up/cool_down
Clam up & Cool down. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/clam_up/cool_down>.
Cool down or Clam up. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/clam_up/cool_down.
Google Ngram Viewer shows how "clam up" and "cool down" have occurred on timeline