rock-solid
adjective
rock-sol·id
ˈräk-ˈsä-ləd 
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
Walter ClemonsHe is right to imply that the political structure is a little shaky—it was a myth that it was ever rock solid.—Xan Smiley
Xan SmileyExamples of rock-solid in a Sentence
Recent Examples on the Web
The most indelible courtroom scene ever came from this rock-solid legal drama that pits a JAG attorney (Tom Cruise) against an autocratic colonel (Jack Nicholson).
—Julie Hinds, Freep.com, 15 Dec. 2025
The all-new E13 shrinks down Escape Trailer's rock-solid insulated fiberglass construction to two-sleeper+ size, creating a tiny habitat that tows and stows with ease.
—New Atlas, 2 Dec. 2025
The Eagles have been rock-solid favorites this season, posting a 7-3 record straight-up in 10 games where they were favored.
—Tyler Everett, MSNBC Newsweek, 28 Nov. 2025
America’s treaty alliances with South Korea and Japan are rock-solid in large part because of these institutional (political and military) linkages.
—Bilal Y. Saab, Time, 22 Nov. 2025
See All Example Sentences for rock-solid
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Julie Hinds, Freep.com, 15 Dec. 2025
The all-new E13 shrinks down Escape Trailer's rock-solid insulated fiberglass construction to two-sleeper+ size, creating a tiny habitat that tows and stows with ease.
—New Atlas, 2 Dec. 2025
The Eagles have been rock-solid favorites this season, posting a 7-3 record straight-up in 10 games where they were favored.
—Tyler Everett, MSNBC Newsweek, 28 Nov. 2025
America’s treaty alliances with South Korea and Japan are rock-solid in large part because of these institutional (political and military) linkages.
—Bilal Y. Saab, Time, 22 Nov. 2025
See All Example Sentences for rock-solid
Cite this Entry
“Rock-solid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rock-solid. Accessed 24 Dec. 2025.
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