Secure
Secure verb - Fill or close tightly with or as if with a plug.
Stop up
Stop up verb - Fill or close tightly with or as if with a plug.
Usage example: stop up the leak
Secure is a synonym for stop up in obstruct topic. You can use "Secure" instead a verb "Stop up", if it concerns topics such as make airtight.
Cite this Source
Stop up and Secure. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/secure/stop_up
Secure & Stop up. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/secure/stop_up>.
Stop up or Secure. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/secure/stop_up.
Google Ngram Viewer shows how "secure" and "stop up" have occurred on timeline