Stiffen
Shore up
Shore up verb - To hold up or serve as a foundation for.
Stiffen and shore up are semantically related in strengthen topic. Sometimes you can use "Stiffen" instead a verb "Shore up".
Mutual synonyms
Cite this Source
Shore up and Stiffen. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/stiffen/shore_up
Stiffen & Shore up. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/stiffen/shore_up>.
Shore up or Stiffen. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/stiffen/shore_up.
Google Ngram Viewer shows how "stiffen" and "shore up" have occurred on timeline