Clam up
Clam up verb - To stop talking.
Frown on
Frown on verb - Look disapprovingly upon.
Cite this Source
Frown on and Clam up. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/clam_up/frown_on
Clam up & Frown on. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/clam_up/frown_on>.
Frown on or Clam up. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/clam_up/frown_on.
Google Ngram Viewer shows how "clam up" and "frown on" have occurred on timeline