Clam up
Clam up verb - To stop talking.
Fold up
Fold up verb - Bend or lay so that one part covers the other.
Cite this Source
Fold up and Clam up. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/clam_up/fold_up
Clam up & Fold up. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/clam_up/fold_up>.
Fold up or Clam up. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/clam_up/fold_up.
Google Ngram Viewer shows how "clam up" and "fold up" have occurred on timeline