Word/Phrase: pueril
Translation: childish
Pronunciation: puˈeɾil
This behavior is pueril - Este comportamiento es pueril
He has a pueril sense of humor - Tiene un sentido del humor pueril
Don't be pueril about this situation - No seas pueril acerca de esta situación
Her arguments were pueril - Sus argumentos eran pueriles
It's pueril to think that way - Es pueril pensar de esa manera