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Jyutping naam4 naam4 zi6 jyu5
Pinyin nán nán zì yǔ

Definitions (CC-CEDICT)
  1. to mumble to oneself
Definitions (CC-CANTO)
  1. to mumble to oneself
Definitions (粵典–words.hk)
  1. 動詞、書面語
    自己​吟吟​沉沉
    to murmur oneself
Definitions (Wiktionary)
  1. phrase, idiomatic
    to mumble to oneself; to whisper to oneself
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    喃喃自语
    喃喃自語
    nán nán zì yǔ
    • I talk to myself.
  2. Mandarin
    他压低声线,喃喃自语地说了些话。
    他壓低聲線,喃喃自語地說了些話。
    tā yā dī shēng xiàn , nán nán zì yǔ dì shuō le xiē huà 。
    • He muttered something under his breath.