as in freezing
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 firming (up)
Verb
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Mikie Sherrill, the successful Democratic candidate for governor of New Jersey, made freezing electric rates a centerpiece of her victorious campaign, and got huge applause in mentioning the issue in her victory speech.—
Tom Rogers,
MSNBC Newsweek,
6 Nov. 2025 -
Temperatures will plummet below freezing early Monday thanks to a blast of Canadian air, the weather service said.—
Kirsten Fiscus,
Nashville Tennessean,
5 Nov. 2025
Verb
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Some evidence suggests beta-glucan prevents atherosclerosis (hardening of the arteries) and neurodegenerative diseases.—
Cynthia Sass,
Health,
5 Nov. 2025
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This time, the cracks appear to be hardening.—
Rob Wile,
NBC news,
1 Nov. 2025
Verb
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Look for signs like the cat stopping purring, stiffening, thrashing their tail, or hissing.—
Maria Azzurra Volpe,
MSNBC Newsweek,
31 Oct. 2025
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Afterwards, a squaring solution—a powdery mixture of water and a gel-like batter used in the decorative cake business—is applied to the inside of the hat’s crown to act as a stiffening agent.—
Eric Twardzik,
Robb Report,
3 Oct. 2025
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Cite this Entry
“Firming (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/firming%20%28up%29. Accessed 13 Nov. 2025.
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