Synonyms of stiffens
as in strengthens
to make more harsh, uncompromising, or severe
plans to further stiffen the already onerous requirements for admission to the elite military unit
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“Stiffens.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/stiffens. Accessed 3 Jun. 2023.
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More from Merriam-Webster on stiffens
Nglish: Translation of stiffens for Spanish Speakers
Britannica English: Translation of stiffens for Arabic Speakers
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