[reporting verb]say something indistinctly and quietly, making it difficult for others to hear 含糊地说话,咕哝 [with obj.]he mumbled something she didn't catch. 他叽里咕噜地说了些她听不清的话。 [with direct speech]‘Sorry’. she mumbled. “对不起”,她咕哝着说。
[with obj.]bite or chew with toothless gums or eat without making much use of the teeth (用无齿的牙床)费力嚼咬,咬磨
noun
[usu. in sing.]a quiet and indistinct utterance 咕哝,含糊的话 Rosie had replied in a mumble. 罗西含糊地做了回答。