# dumb as a box of rocks

> English word · Adjective

## Definitions
1. Very stupid.

## Etymology
Variation of dumb as a rock.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/dumb-as-a-box-of-rocks