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Jyutping jan2 hei3 tan1 sing1
Pinyin rěn qì tūn shēng

Definitions (粵典–words.hk)
  1. 名詞
    忍受​委屈​而​唔​去​發泄​自己​嘅​情​緒
    (lit.) to swallow insult and humiliation silently; (fig.) to endure indignity without protest
    • 雖然佢老闆唔好人,但係為咗份工,唯有忍氣吞聲。
      虽然佢老板唔好人,但系为咗份工,唯有忍气吞声。
      Although his boss was not treating him well, he should endure indignity for the sake of his job.

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Jyutping jan2 hei3 tan1 seng1
Pinyin rěn qì tūn shēng

Definitions (CC-CEDICT)
  1. to submit to humiliation (idiom); to suffer in silence
  2. to swallow one's anger
  3. to grin and bear it
Definitions (Wiktionary)
  1. phrase, idiomatic
    to silently eat humble pie; to suppress anger and quietly bear humiliation
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    虽然佢老板唔好人,但系为咗份工,唯有忍气吞声。
    雖然佢老闆唔好人,但係為咗份工,唯有忍氣吞聲。
    • Although his boss was not treating him well, he should endure indignity for the sake of his job.