mus·si·ta·tion /ˌməsəˈteʃən/ 名詞
無聲囁語
Mus·si·ta·tion n. A speaking in a low tone; mumbling. [Obs.]
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mussitation
n : a low continuous indistinct sound; often accompanied by
movement of the lips without the production of articulate
speech [syn: mutter, muttering, murmur, murmuring,
murmuration]