baby talk

US /ˈbeɪ.bi ˌtɔːk/
UK /ˈbeɪ.bi ˌtɔːk/
"baby talk" picture
1.

儿语, 婴儿语

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.
她和刚出生的侄女说话时用儿语
The toddler's baby talk was adorable.
蹒跚学步的孩子说的儿语很可爱。