Stiff
Toughened
Toughened adjective - Able to withstand hardship, strain, or exposure.
Stiff and toughened are semantically related. Sometimes you can use "Stiff" instead an adjective "Toughened".
Nearby Word: toughening
Mutual synonyms
Cite this Source
Toughened and Stiff. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/stiff/toughened
Stiff & Toughened. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/stiff/toughened>.
Toughened or Stiff. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/stiff/toughened.
Google Ngram Viewer shows how "stiff" and "toughened" have occurred on timeline