Definitions:

1. Refers to an early stage of language development in infants, typically occurring between the ages of 6 and 12 months, where babies produce repetitive syllables and sounds without any specific meaning attached to them. NOUN
   • The toddler began babbling their first words.
2. The action or fact of talking rapidly and continuously in a foolish, excited, or incomprehensible way. NOUN
   • The old man was babbling incoherently to himself on the park bench.
3. The continuous murmuring sound of flowing water. NOUN
   • I could hear the stream babbling softly in the distance.

Synonyms:

• burble
• chatter
• gabble
• gibber
• jabber
• murmur
• nonsense
• prattle
• ramble
• senseless talk