oobleck

O1O1B3L1E1C3K5
/ˈuː.blɛk/

noun

A mixture of cornstarch and water with unusual physical properties.

Scrabble 15
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Meanings

nounoobleck (usually uncountable, plural ooblecks)

plural ooblecks

  1. uncountableusuallyA mixture of cornstarch and water with unusual physical properties.

    How many people found that the oobleck was different from the flour?

    1995, Nancy Lee Cecil, The Art of Inquiry: Questioning Strategies for K-6 Classrooms
    2 more examples

    Pour the oobleck into a water table or into plastic tubs to place on tables.

    1998, Kathy Charner, The Giant Encyclopedia of Science Activities for Children 3 to 6

    I know from personal experience that it's not fun to be covered with oobleck.

    2002, Joe Schwarcz, That's the Way the Cookie Crumbles

Origin

Named for a sticky substance in Bartholomew and the Oobleck (1949), children's story by Dr. Seuss.

Full word history & related roots →
Cite this entry
APA

oobleck. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/oobleck

MLA

“oobleck.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/oobleck. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “oobleck,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/oobleck.

Source: oobleck on Wiktionary, CC BY-SA 4.0.