rock-solid

adjective

rock-sol·​id ˈräk-ˈsä-ləd How to pronounce rock-solid (audio)
variants or rock solid
: completely or perfectly solid (as because of great strength or dependability)
supported by a rock-solid foundation
She has a rock-solid reputation.
Their relationship was rock solid.
… she moved in an artificial world without ever losing her rock-solid integrity.Walter Clemons
He is right to imply that the political structure is a little shaky—it was a myth that it was ever rock solid.Xan Smiley

Examples of rock-solid in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The reincarnation of Paisley Park as a tourist-attracting museum did not seem like a rock-solid an idea at first. Tribune News Service, Baltimore Sun, 21 Apr. 2026 The Avata's digital stabilization is great—footage is rock-solid when flying in forward or reverse, or changing altitude. Jim Fisher, PC Magazine, 21 Apr. 2026 Drummer Charlie Watts, the group’s newest member, a jazz aficionado and an accomplished percussionist, propelled the music forward with a rock-solid beat. Marc Ballon, Los Angeles Times, 20 Apr. 2026 This requires scouts’ relationships within the individual schools to be rock-solid. Miami Herald, 16 Apr. 2026 See All Example Sentences for rock-solid

Word History

First Known Use

1871, in the meaning defined above

Time Traveler
The first known use of rock-solid was in 1871

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Cite this Entry

“Rock-solid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rock-solid. Accessed 26 Apr. 2026.

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