jibbers

Example:He mumbled his response, not wanting to reveal his true thoughts.

Definition:To speak indistinctly, especially because one is shy, nervous, or confused.

Example:He started to stammer when asked about the details of the incident.

Definition:To repeat parts of a word or to pause and hesitate when speaking, typically because of nervousness or lack of fluency.

Example:The children were jabbering excitedly about their plans for the day.

Definition:To talk or speak in an abrupt, rapid, and often incoherent manner, especially when excited or nervous.