Rock solid
Valid and rock solid are semantically related. in reliable topic. In some cases you can use "Valid" instead an adjective phrase "Rock solid".
Valid
Valid adjective - According to the rules of logic.
Rock solid and valid are semantically related. Sometimes you can use "Rock solid" instead an adjective "Valid".
Nearby Words: validity, validation
Mutual synonyms
Related pairs
Cite this Source
Valid and Rock solid. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/rock_solid/valid
Rock solid & Valid. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/rock_solid/valid>.
Valid or Rock solid. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/rock_solid/valid.
Google Ngram Viewer shows how "rock solid" and "valid" have occurred on timeline