" Ay, ay, I should a' known," I heard her mumble, " I should a' known, for did not Katharine tell me?" "The Coming of the King" by James Hocking

The circumstantial charge made no impression on Master Gammon, who was heard to mumble, as from the inmost recesses of tight- packed dumpling; but he left the vindication of his case to the farmer's laughter. "The Complete Project Gutenberg Works of George Meredith" by George Meredith

I tried again to talk to him, but I was suffering too much to do more than mumble. "Grace Harlowe's Golden Summer" by Jessie Graham Flower