baby talk
US /ˈbeɪ.bi ˌtɔːk/
UK /ˈbeɪ.bi ˌtɔːk/

1.
langage bébé, parler bébé
a simplified type of speech used by adults when talking to young children, or by young children learning to speak
:
•
She used baby talk when speaking to her newborn niece.
Elle a utilisé le langage bébé en parlant à sa nièce nouveau-née.
•
The toddler's baby talk was adorable.
Le langage bébé du tout-petit était adorable.