Clammed up
Covert and clammed up are semantically related. in uncommunicative topic. In some cases you can use "Covert" instead an adjective "Clammed up".
Covert
Covert adjective - Screened or sequestered from view.
Clammed up and covert are semantically related. Sometimes you can use "Clammed up" instead an adjective "Covert".
Cite this Source
Covert and Clammed up. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/clammed_up/covert
Clammed up & Covert. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/clammed_up/covert>.
Covert or Clammed up. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/clammed_up/covert.
Google Ngram Viewer shows how "clammed up" and "covert" have occurred on timeline