childishness
noun/ˈtʃaɪldɪʃnəs/
/ˈtʃaɪldɪʃnəs/
[uncountable]- the quality of being typical of a child
- His face is a fascinating mixture of childishness and maturity.
- (disapproving) the fact in an adult of thinking and behaving in a stupid or silly way synonym immaturity (1)
- I felt frustrated at the sheer childishness of my teammates.
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childishness