jabber

Allanson made some sound in his throat, as if attempting to speak, but his tongue refused its office, and he only jabbered.

She had Lord James' collar in one big fist and she pounded the table with the other and talked a blue streak. Nobody could make out plain what she said, for she was mainly jabbering Swede lingo, but there was English enough, of a kind, to give us some idee.