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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Recent Examples of Synonyms for firm (up)
Verb
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After that, freeze credit, file an identity theft report and remove exposed personal information from the web.
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Eugene Mymrin/Getty Images With the Federal Reserve electing to keep interest rates frozen again this week – its fourth such pause in 2026 – savers can comfortably take the time to shop around for a savings account that works for them and their goals.
Verb
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The company is offering several products at no cost for a limited period or at a 90% discount on one-year term licenses, targeting customers who need to further harden Oracle Database environments but have delayed investment due to cost, complexity, or procurement friction.
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As that assumption erodes, attention has shifted from hardening GPS toward security through diversification.
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“Firm (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/firm%20%28up%29. Accessed 27 Jun. 2026.
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