Definition from Wiktionary, the free dictionary
- (uncountable) The state or characteristic of being childish.
- (countable) Childish behaviour.
1868, John Mockett Cramp, Baptist History: from the foundation of the Christian church to the close of the eighteenth century, page 43:
- 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 […]