baby talk (uncountable)

1. (linguistics) The form of speech used by adults in talking to very young children.

   Synonyms: child-directed speech, hypocorism, motherese, parentese

   • 1960, P[elham] G[renville] Wodehouse, chapter III, in Jeeves in the Offing, London: Herbert Jenkins, OCLC 1227855 ↗:

     [...] while not a super-goof like some of the female goofs I'd met, she was quite goofy enough to be going on with. Her whole aspect was that of a girl who at the drop of a hat would start talking baby talk.

• babytalk

• French: langage enfantin, mamanais
• German: Babysprache, Kindersprache
• Spanish: maternés