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Jyutping sam1 on1 lei5 dak1
Pinyin xīn ān lǐ dé

Definitions (CC-CEDICT)
  1. to have a clear conscience
  2. to have no qualms about sth
Definitions (粵典–words.hk)
  1. 語句
    安心​;​自問​冇​虧​欠​任何人​;​唔​內疚
    to be free from any qualms of conscience; to have with a clear conscience
    • 我盡咗力救每一個病人,所以我幾時都心安理得。
      我尽咗力救每一个病人,所以我几时都心安理得。
      ngo5 zeon6 zo2 lik6 gau3 mui5 jat1 go3 beng6 jan4, so2 ji5 ngo5 gei2 si4 dou1 sam1 on1 lei5 dak1.
      I have tried my best to save the life of each patients so I always have a clear conscience.
Definitions (Wiktionary)
  1. phrase, idiomatic
    to feel at ease and justified; to have an easy conscience
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Definitions (HSK3.0)
  1. HSK3 七一九级词汇表 #4598
Examples (粵典–words.hk)
  1. Cantonese
    心安理得
    心安理得
    sam1 on1 lei5 dak1
    • to have with a clear conscience
  2. Cantonese
    我尽咗力救每一个病人,所以我几时都心安理得。
    我盡咗力救每一個病人,所以我幾時都心安理得。
    ngo5 zeon6 zo2 lik6 gau3 mui5 jat1 go3 beng6 jan4, so2 ji5 ngo5 gei2 si4 dou1 sam1 on1 lei5 dak1.
    • I have tried my best to save the life of each patients so I always have a clear conscience.