puerilism

[ pyoo-er-uh-liz-uh m, pyoo r-uh- ]
/ ˈpyu ər əˌlɪz əm, ˈpyʊər ə- /

noun Psychiatry.

childishness in the behavior of an adult.

Origin of puerilism

First recorded in 1920–25; puerile + -ism

British Dictionary definitions for puerilism

puerilism
/ (ˈpjʊərɪˌlɪzəm) /

noun

psychiatry immature or childish behaviour by an adult

Medical definitions for puerilism

puerilism
[ pyōōər-ə-lĭz′əm, pyurə- ]

n.

Childish behavior in an adult, especially as a symptom of mental illness.