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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Near or below freezing temperatures are possible before daybreak on Wednesday morning.—
Rachael Jay,
CBS News,
5 Apr. 2026 -
Areas north of the Missouri River may even experience freezing conditions in the early morning, meteorologists said on social media.—
Kendrick Calfee,
Kansas City Star,
4 Apr. 2026
Verb
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Nancy Watkins, a principal and actuary with consulting firm Milliman in San Francisco, said one of the report’s most important recommendations is statewide coordination of efforts to reduce wildfire threats through home hardening and removing flammable materials around buildings.—
Bloomberg,
Mercury News,
10 Apr. 2026
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But Iran, which watched the 2003 toppling of Saddam Hussein next door, has been hardening its regime ever since.—
The Week US,
TheWeek,
6 Apr. 2026
Verb
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The machine dryer agitates the clothing and prevents fibers from stiffening during drying, which is why clothing comes out feeling soft.—
Emily Benda Gaylord,
The Spruce,
23 Feb. 2026
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The Czech Republic’s new government will seek to transform the defense industry into an engine of the nation’s export economy as the flagship auto sector faces stiffening competition, Karel Havlicek, minister for industry and trade, told us.—
Suzanne Lynch,
Bloomberg,
27 Jan. 2026
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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 15 Apr. 2026.
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