Definitions:

1. The simplified, exaggerated, and affectionate way adults speak to infants, often characterized by higher pitch, simplified vocabulary, and repeated sounds. NOUN
   • Parents often use babytalk like 'goo-goo' and 'ba-ba' to engage with their infants.
2. The simplistic, often nonsensical sounds and words that babies produce as they learn to speak. NOUN
   • Her baby's first words were adorable bits of babytalk like 'mama' and 'dada'.

Synonyms:

• baby language
• baby talk
• infant-directed speech