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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In 2057, Earth is freezing as the sun has begun to die.—
Los Angeles Times,
Los Angeles Times,
21 Feb. 2026 -
The National Weather Service warns residents of the negative effect of frost and freeze conditions on crops and other sensitive vegetation.—
Veronica Fernandez-Alvarado
Updated February 20,
Sacbee.com,
21 Feb. 2026
Verb
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DeJan was dispatched to Shaffner-Heaney Associates in South Bend, Indiana, in the spring of 2023 to manage the Scrabble board of letters from the speech, made of high performance concrete letters hardened in fiberglass molds.—
A.D. Quig,
Chicago Tribune,
26 Feb. 2026
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While Britain's major political parties, including the hard-right Reform UK, refuse to engage with Robinson, protests linked to the activist and his associates have become a common sight in British cities amid hardening public views on immigration.—
Alexander Smith,
NBC news,
26 Feb. 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 28 Feb. 2026.
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