Clam up
Clam up verb - To stop talking.
Cut off
Cut off verb - To bring (as an action or operation) to an immediate end.
Cite this Source
Cut off and Clam up. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/clam_up/cut_off
Clam up & Cut off. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/clam_up/cut_off>.
Cut off or Clam up. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/clam_up/cut_off.
Google Ngram Viewer shows how "clam up" and "cut off" have occurred on timeline