/'mʌmbl; `mʌmbl/ v [I, Ipr, Tn, Tf, Dn.pr] ~ (about sth); ~ sth (to sb) speak or say sth unclearly and usu quietly, so that people cannot hear what is said 含糊地说某事; 叽咕; 咕哝
*He always mumbles when he's embarrassed. 他感到难为情时说话就含糊不清了.
* What are you mumbling about? I can't understand a word! 你叽里咕噜说什么呀? 我一句也听不懂!
* He mumbled something to me which I didn't quite catch. 他对我叽咕了几句话, 可我没太听清楚.
* She mumbled that she didn't want to get up yet. 她咕哝着说还不想起床.

n [sing] speech that is not heard clearly; noise like this 含糊的话或声音; 咕哝
*a mumble of voices, conversation, etc 喃喃人语声、谈话声等
* an incoherent, indistinct, distant, etc mumble 不连贯的、分辨不清的、远处的...低语声.

v [I and T]
[Date: 1300-1400; Origin: From the sound]
to say something too quietly or not clearly enough, so that other people cannot understand you
→mutter
　He bumped into someone and mumbled an apology.
　Stop mumbling!
mumble to yourself
　A woman on the corner was mumbling to herself.
>mumblen[C]