Certain
Certain adjective - Known but not named.
Rock-solid and certain are semantically related. In some cases you can replace phrase "Rock-solid" with "Certain", this terms are similar.
Rock-solid
Certain and rock-solid are semantically related. Sometimes you can use "Certain" instead an adjective phrase "Rock-solid".
Mutual synonyms
Both words in one sentence
- When you need rock-solid evidence that something happened or that someone committed a certain act, having it all caught on video (or audio) tape is just about the most convincing piece of proof there is.
Source: Caught on Tape
Cite this Source
Rock-solid and Certain. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/certain/rock-solid
Certain & Rock-solid. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/certain/rock-solid>.
Rock-solid or Certain. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/certain/rock-solid.
