1. • He mumbled unintelligibly and looked Abashed

2. He mumbled unintelligibly and looked abashed.

3. As a result, there would be no automatic announcements during the whole ride. Instead, the captain had to mumble unintelligibly through the speakers.

4. As verbs the difference between babble and Blabbering is that babble is to utter words indistinctly or unintelligibly; to utter inarticulate sounds; as, a child babbles while Blabbering is .