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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In many ways, this village felt as if it was frozen in time, only a ringing clocktower bell served as a reminder of every passing hour.—
Daria Bachmann,
Travel + Leisure,
8 May 2025 -
Amid Trump's second presidential term, James has continued her legal challenges, filing lawsuits to block the administration's efforts to end birthright citizenship and freeze federal grants, which the courts have halted.—
James Bickerton,
MSNBC Newsweek,
8 May 2025
Verb
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Without clear communication from management, early skepticism can harden into quiet resistance.—
Benjamin Laker,
Forbes.com,
12 May 2025
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While the healing process can be beneficial in securing the implant in place, the scar tissue can also harden and contract around the insert, causing difficulties in regards to aesthetics — as well as pain — per the site.—
Michelle Lee,
People.com,
12 May 2025
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“Firm (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/firm%20%28up%29. Accessed 17 May. 2025.
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