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
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The wrongful murder conviction, now vacated, had kept him in state custody for decades, effectively freezing that process.—
Antonio María Delgado,
Miami Herald,
11 Oct. 2025 -
Damascus called it separatist theater and froze the Paris track.—
Hassan Hassan,
Time,
11 Oct. 2025
Verb
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Around the same time, Israeli strikes on Damascus and continued clashes in Sweida hardened the idea, inside parts of the Kurdish movement, that the center could break.—
Hassan Hassan,
Time,
11 Oct. 2025
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All of it hardened the Mariners, preparing them for survival.—
Tyler Kepner,
New York Times,
11 Oct. 2025
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“Firm (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/firm%20%28up%29. Accessed 15 Oct. 2025.
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