1. talks rapidly and continuously in a foolish, excited, or incomprehensible way
2. makes the continuous murmuring sound of water flowing over rocks

1. foolish, excited, or incomprehensible talk
2. the continuous murmuring sound of water

Examples

• The excited child babbles about her day at school.
• He babbles nervously when he’s anxious.
• The brook babbles softly through the forest.
• I couldn’t understand his babbles after the accident.
• The babbles of the stream were soothing.
• She babbles in her sleep sometimes.
• The politician’s babbles confused the audience.