dumb as dirt

adjective

Extremely stupid.

Similar
addlebrainedaddlepatedairheadedbee-brainedbeef-wittedsoftbeefheadedbeetle-headed
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Meanings

adjectivedumb as dirt (not comparable)
  1. not comparableslangsimileExtremely stupid.

    Synonyms: addlebrained, addlepated, airheaded, bee-brained, beef-witted, soft, beefheaded, beetle-headed

Synonyms & antonyms

adjectiveExtremely stupid.

Similar
addlebrainedaddlepatedairheadedbee-brainedbeef-wittedsoftbeefheadedbeetle-headedbirdbrainedblockheadedBoeotianboneheadedboofheadedbraindeadbrainlessbubbleheadedbuffle-headedbullet-headedcerebrally challengedchildish
Also see
stupid
Cite this entry
APA

dumb as dirt. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/dumb%20as%20dirt

MLA

“dumb as dirt.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/dumb%20as%20dirt. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “dumb as dirt,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/dumb%20as%20dirt.

Source: dumb as dirt on Wiktionary, CC BY-SA 4.0.