Clammed up and Sure
Opposite meaning terms
Clammed up
Sure is an antonym for clammed up in unwilling to decide topic.
Sure
Sure adjective - Having or showing a mind free from doubt.
Clammed up is an antonym for sure.
Nearby Word: surely
Cite this Source
Sure and Clammed up. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/clammed_up/sure
Clammed up & Sure. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/clammed_up/sure>.
Sure or Clammed up. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/clammed_up/sure.
Google Ngram Viewer shows how "clammed up" and "sure" have occurred on timeline