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
Indurate
Indurate verb - To become physically firm or solid.
Usage example: clay that had been indurated by long exposure to the summer sun
Mutual synonyms
Cite this Source
Indurate and Firm up. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/firm_up/indurate
Firm up & Indurate. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/firm_up/indurate>.
Indurate or Firm up. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/firm_up/indurate.
Google Ngram Viewer shows how "firm up" and "indurate" have occurred on timeline