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

名詞
1.
幼児語, 赤ちゃん言葉
a simplified type of speech used by adults when talking to young children, or by young children learning to speak
例:
•
She used baby talk when speaking to her newborn niece.
彼女は生まれたばかりの姪に話しかけるとき、幼児語を使った。
•
The toddler's baby talk was adorable.
幼児の幼児語は可愛らしかった。
Lingolandでこの単語を学ぶ