嘟 ㄉㄨ dū 嘟 ㄉㄨ dū 哝 ㄋㄨㄥ ˊ nóng 哝 ㄋㄨㄥ ˊ nóng 嘟 ㄉㄨ dū 嘟 ㄉㄨ dū 噥 ㄋㄨㄥ ˊ nóng 噥 ㄋㄨㄥ ˊ nóng to mumble in whispers to mutter to oneself