Firm up
Firm up verb - To become physically firm or solid.
Usage example: wait for the modeling clay to firm up before handling the finished pot
Mutual synonyms
Cite this Source
Solidify and Firm up. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/firm_up/solidify
Firm up & Solidify. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/firm_up/solidify>.
Solidify or Firm up. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/firm_up/solidify.
Google Ngram Viewer shows how "firm up" and "solidify" have occurred on timeline