Clamming up
Frown upon and clamming up are semantically related. In some cases you can use "Frown upon" instead a verb "Clamming up".
Frown upon
Frown upon verb - Look disapprovingly upon.
Clamming up and frown upon are semantically related. Sometimes you can use "Clamming up" instead a verb "Frown upon".
Mutual synonyms
Cite this Source
Frown upon and Clamming up. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/clamming_up/frown_upon
Clamming up & Frown upon. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/clamming_up/frown_upon>.
Frown upon or Clamming up. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/clamming_up/frown_upon.
Google Ngram Viewer shows how "clamming up" and "frown upon" have occurred on timeline