Become hard
Stiffen and become hard are semantically related. In some cases you can use "Stiffen" instead a verb phrase "Become hard".
Stiffen
Stiffen verb - To make more harsh, uncompromising, or severe.
Become hard and stiffen are semantically related. You can use "Become hard" instead a verb "Stiffen".
Mutual synonyms
Related pairs
Cite this Source
Stiffen and Become hard. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/become_hard/stiffen
Become hard & Stiffen. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/become_hard/stiffen>.
Stiffen or Become hard. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/become_hard/stiffen.
Google Ngram Viewer shows how "become hard" and "stiffen" have occurred on timeline