thick as two short planks

adjective

Very stupid.

Similar
thick as a brickthick as a plankaddlebrainedaddlepatedairheadedbee-brainedbeef-wittedsoft
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Meanings

adjectivethick as two short planks (not comparable)
  1. informalnot comparablesimileVery stupid.

    “I dunno. He’s thick as two short planks of wood, but his six brothers are all banged up in here, so he’s got eyes and ears all over the prison. Auntie Flip better watch out.”

    2017, David Walliams [pseudonym; David Edward Williams], Bad Dad, London: HarperCollins Children’s Books, →ISBN

    Synonyms: thick as a brick, thick as a plank, addlebrained, addlepated, airheaded, bee-brained, beef-witted, soft

Synonyms & antonyms

adjectiveVery stupid.

Similar
thick as a brickthick as a plankaddlebrainedaddlepatedairheadedbee-brainedbeef-wittedsoftbeefheadedbeetle-headedbirdbrainedblockheadedBoeotianboneheadedboofheadedbraindeadbrainlessbubbleheadedbuffle-headedbullet-headed
Also see
stupidthickthick as a plank
Cite this entry
APA

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

MLA

“thick as two short planks.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/thick%20as%20two%20short%20planks. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “thick as two short planks,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/thick%20as%20two%20short%20planks.

Source: thick as two short planks on Wiktionary, CC BY-SA 4.0.