Childishness

Definitions

1. The state or characteristic of being childish.
   uncountable
2. Childish behaviour.
   countable

Equivalents

Examples

“Exorcism, unction, the sign⟳ of the cross, holy water, infant-communion, and many other childishnesses, were also called "Apostolic institutions" — not at first, but long after they were invented, to conceal their real origin […]”

CEFR level