solid as a rock

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solid as a rock

adjective

not comparable Extremely thick and heavy, so as to make it impossible to move. We're not going to be able to break down this door: it's solid as a rock.
Similar: rock solid
not comparable, of a person Very reliable and dependable Stewart has been solid as a rock ever since becoming the new vice-chairman.
Similar: rock solid

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MLA

"solid as a rock." Wiktionary, via Micwyn, micwyn.com/word/solid%20as%20a%20rock. Accessed 6 Nov. 2026.

APA

solid as a rock. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/solid%20as%20a%20rock

Chicago

"solid as a rock." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/solid%20as%20a%20rock.

BibTeX

@misc{solid_as_a_rock_2026,
  title = {solid as a rock},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/solid%20as%20a%20rock},
  urldate = {2026-11-06}
}