Word.ws English Dictionary

dumb as a box of rocks

dumb as a box of rocks adjective: very stupid.

Adjective

(as) dumb as a box of rocks

  1. (slang, simile) Very stupid.
    • The drummer in my friend's band is pretty hot, but he's dumb as a box of rocks. I hear he likes me, and I definitely don't want to date him—but is his stupidity any reason not to simply have sex with him? — Carla, Brooklyn, New York2001 July, “Tell it to my Heart”, in CMJ New Music Monthly, →ISSN, page 29

Origin of dumb as a box of rocks

Variation of dumb as a rock.

Questions about dumb as a box of rocks

What does dumb as a box of rocks mean?
Dumb as a box of rocks means very stupid.
What part of speech is dumb as a box of rocks?
Dumb as a box of rocks is an adjective.

Words near dumb as a box of rocks in the dictionary

  1. dumas
  2. Dumasian
  3. dumb
  4. dumb ague
  5. dumb as a bag of hammers
  6. dumb as a box of rocks
  7. dumb as a brick
  8. dumb as a doorknob
  9. dumb as a doornail
  10. dumb as a fish
  11. dumb as a haddock

Source and license

Adapted from Wiktionary: dumb as a box of rocks (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: En-au-dumb as a box of rocks.ogg.

Cite this entry: “dumb as a box of rocks.” Word.ws, https://word.ws/dumb_as_a_box_of_rocks. Based on Wiktionary, CC BY-SA 4.0.