[pyoo-er-uh-liz-uh m, pyoo r-uh-]
- childishness in the behavior of an adult.
Origin of puerilism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- psychiatry immature or childish behaviour by an adult
- Childish behavior in an adult, especially as a symptom of mental illness.