Meaning of the word infantile in English

What does infantile mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

infantile

US /ˈɪn.fən.təl/
UK /ˈɪn.fən.taɪl/
"infantile" picture

Adjective

1.

childish or immature, especially in an annoying way

Example:
I'm tired of your infantile behavior.
He made an infantile joke that no one found funny.
2.

relating to infants or infancy

Example:
The study focused on infantile development in the first year.
She suffered from infantile paralysis as a child.