嘟囔 [－－]

Jyutping dou1 nong4
Pinyin dū nang

Definitions (CC-CEDICT)
  1. to mumble to oneself
Definitions (Wiktionary)
  1. verb
    to mumble to oneself
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）