Rock-hard
Tough
Tough adjective - Not easily chewed.
Cite this Source
Tough and Rock-hard. (2016). Retrieved 2026, August 09, from https://thesaurus.plus/related/rock-hard/tough
Rock-hard & Tough. N.p., 2016. Web. 09 Aug. 2026. <https://thesaurus.plus/related/rock-hard/tough>.
Tough or Rock-hard. 2016. Accessed August 09, 2026. https://thesaurus.plus/related/rock-hard/tough.