as in to freeze
to become physically firm or solid
wait for the modeling clay to firm up before handling the finished pot
Synonyms & Similar Words
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Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for firm (up)
Verb
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The initiative includes a warrant to seize and shut down a major online recruitment channel on the Telegram messaging app and freezing hundreds of millions of dollars in illicit assets, Pirro said in a virtual press conference connecting her from Washington to journalists in Asia.—
ABC News,
ABC News,
24 Apr. 2026 -
The bill has already frozen the build-to-rent market.—
Nathaniel Meyersohn,
CNN Money,
24 Apr. 2026
Verb
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The dark forms of lunar maria, or lunar seas, will be easy to see with the naked eye, scarring the lunar surface where ancient lava flows once flooded networks of impact basins before hardening to form sweeping basaltic planes.—
Anthony Wood,
Space.com,
22 Apr. 2026
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The judges also said the district court’s ruling violated a 1996 federal law that hardened immigration enforcement and restricted judicial power on immigration.—
Claire Heddles,
Miami Herald,
22 Apr. 2026
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Cite this Entry
“Firm (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/firm%20%28up%29. Accessed 25 Apr. 2026.
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