au-au
The soft, repetitive babbling sounds a baby makes before learning to speak. Cute, happy pre-language vocalizations.
💡A baby in a crib reaching for a toy — 'The baby went au-au, happily babbling at the mobile above.'
赤ちゃんがあうあうと声を出している。
The baby is babbling au-au happily.
The infant lay in the crib going ___ at the colorful mobile.
赤ちゃんがベビーベッドで○○と声を出していた。