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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Example Sentences
Recent Examples of Synonyms for firm (up)
Verb
-
The spike in fatal crashes during the first three months of 2026 follows an increase in crashes and fatalities attributed to Colorado’s relatively dry, clear road conditions and temperatures above freezing in November and December, which led to motorcyclists extending their riding.—
Bruce Finley,
Denver Post,
1 May 2026 -
Mayoral candidate Zohran Mamdani promised to address housing affordability in the city and work to freeze the rent.—
Amethyst Martinez,
USA Today,
1 May 2026
Verb
-
Lightly scrub grout or tile lines before buildup hardens further.—
Lauren Jarvis-Gibson,
Miami Herald,
30 Apr. 2026
-
Emery prefers his players to be battle-hardened and to be involved in matches, rather than just training.—
Jacob Tanswell,
New York Times,
30 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 3 May. 2026.
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