as in to freeze
to become physically firm or solid
wait for the modeling clay to firm up before handling the finished pot
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Example Sentences
Recent Examples of Synonyms for firm (up)
Verb
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Resistance to the idea is, in part, fueled by the fact salaries for lawmakers have been frozen since 2009.—
Mychael Schnell,
The Hill,
30 July 2025 -
Father and English teacher Frank Strong, a co-founder of the Texas Freedom to Read Project, told the committee that similar restrictions at the Carroll school district caused one high school library to freeze book purchases for two years.—
Bayliss Wagner,
Austin American Statesman,
30 July 2025
Verb
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Leadership bottlenecks formed in Q3 often harden in Q4, meaning your 2026 initiatives start behind schedule before the year even begins.—
Brent Gleeson,
Forbes.com,
4 Aug. 2025
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The dynamic the two built wasn’t born in the writers’ room—it was built between takes, crafted in eye contact, shaped by mutual trust, and hardened under the pressures of being Black artists asked to do twice as much for half the credit.—
Shelby Stewart,
Essence,
22 July 2025
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“Firm (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/firm%20%28up%29. Accessed 7 Aug. 2025.
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