puerilism
noun
pu·er·il·ism ˈpyu̇(-ə)r-ə-ˌli-zəm 
ˈpyu̇(-ə)r-ˌī-
: childish behavior especially as a symptom of mental illness
Word History
First Known Use
1924, in the meaning defined above
- pretexted
- pretexting
- pretexts
- pretheater
- prethin
- prethoracic
- prethoughtful
- prethoughtfully
- prethoughtfulness
- pretia affectionis
- preticketed
- preticketing
- pretickets
- pretil
- pretium affectionis
- pretold
- pretone
- pretonic
- pretor
- pretor, pretorian
- Pretoria
- pretoria
- pretoria-witwatersrand-vereeniging
- pretoriae
- pretorial