The term comes from the Nahuatl language and means to speak unintelligibly, which is why Nahuatl speakers called several different unrelated languages "Popolōca".

The woman spoke unintelligibly.

The other turned on the woman and her daughter, speaking unintelligibly, menacing them with another knife.

The tinny voice spoke unintelligibly.

Speaking unintelligibly, the cat told him she desperately wanted to sing at the audition and possibly make it to concerts.

He spoke unintelligibly of the sacrifices he had made on Billy's behalf.

He speaks unintelligibly.

He sees her in various locations and, after starting a conversation with her, bursts in to tears, and begins to speak unintelligibly through his sobs.

Sixth spoke unintelligibly.

But Peter Lake the dreamer watched as Beverly, her hair plaited in the old fashion, curried Athansor and spoke to him unintelligibly.