Cast-iron
Cast-iron adjective - Able to withstand hardship, strain, or exposure.
Usage example: he has a cast-iron faith in his innate ability to overcome any adversity that life might throw against him
Mutual synonyms
Cite this Source
Sturdy and Cast-iron. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/cast-iron/sturdy
Cast-iron & Sturdy. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/cast-iron/sturdy>.
Sturdy or Cast-iron. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/cast-iron/sturdy.