childishness
🇺🇸
/ˈtʃaɪldɪʃnəs/
🇬🇧
/ˈtʃaɪldɪʃnəs/
Behavior or characteristics typical of a child, such as being playful or innocent.
Despite his age, he still displays a certain level of childishness when he plays with his toys.
Lack of maturity or good sense, especially in an adult.
The childishness of the argument was astounding; it was as if they were still in elementary school.