Clam up
Clam up verb - To stop talking.
Sitting on and clam up are semantically related In some cases you can use "Sitting on" instead a verb "Clam up".
Sitting on
Mutual synonyms
Related pairs
Cite this Source
Sitting on and Clam up. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/clam_up/sitting_on
Clam up & Sitting on. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/clam_up/sitting_on>.
Sitting on or Clam up. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/clam_up/sitting_on.
Google Ngram Viewer shows how "clam up" and "sitting on" have occurred on timeline