solid as a rock

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English[edit]

Adjective[edit]

as solid as a rock ‎(not comparable)

  1. (simile) 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.
  2. (simile, of a person) Very reliable and dependable
    Stewart has been solid as a rock ever since becoming the new vice-chairman.

Synonyms[edit]