childishness
child-ish-ness
noun
The quality of behaving in an immature or silly way, typical of a child.
"Her constant childishness was quite annoying."
Thesaurus
Synonyms: puerility
child-ish-ness
The quality of behaving in an immature or silly way, typical of a child.
"Her constant childishness was quite annoying."
Synonyms: puerility