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puerilism

[ pyoo-er-uh-liz-uhm, pyoor-uh- ]

noun

, Psychiatry.
  1. childishness in the behavior of an adult.

puerilism

/ ˈpjʊərɪˌlɪzəm /

noun

  1. psychiatry immature or childish behaviour by an adult

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Word History and Origins

Origin of puerilism1

First recorded in 1920–25; puerile + -ism

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