Seal up
Strengthen and seal up are semantically related. In some cases you can use "Strengthen" instead a verb "Seal up".
Strengthen
Strengthen verb - To increase the ability of (as a muscle) to exert physical force.
Seal up and strengthen are semantically related. Sometimes you can use "Seal up" instead a verb "Strengthen".
Nearby Words: strength, strengthening
Cite this Source
Strengthen and Seal up. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/seal_up/strengthen
Seal up & Strengthen. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/seal_up/strengthen>.
Strengthen or Seal up. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/seal_up/strengthen.
Google Ngram Viewer shows how "seal up" and "strengthen" have occurred on timeline