solid as a rock

English

Pronunciation

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Adjective

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

• (thick and heavy): rock solid
• (reliable and dependable): rock solid