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Jyutping fu2 sam1
Pinyin kǔ xīn

Definitions (CC-CEDICT)
  1. painstaking effort
  2. to take a lot of trouble
  3. laborious at pains
Definitions (粵典–words.hk)
  1. 名詞
    辛勞​付出​嘅​心思​同​努力​(​量​詞​:​片​/​番​)
    painstaking effort; trouble taking
    • 苦心研究
      苦心研究
      fu2 sam1 jin4 gau3
      painstaking study or research
    • 苦心經營
      苦心经营
      fu2 sam1 ging1 jing4
      to take great effort to build up
    • 苦心孤詣
      苦心孤诣
      fu2 sam1 gu1 ngai6
      to make painstaking efforts
    • 唔好白費我一番苦心,快啲飲晒啲湯佢。
      唔好白费我一番苦心,快啲饮晒啲汤佢。
      m4 hou2 baak6 fai3 ngo5 jat1 faan1 fu2 sam1, faai3 di1 jam2 saai3 di1 tong1 keoi5.
      I put hours of effort into the soup. Don't waste it.
Definitions (Wiktionary)
  1. noun
    pains; efforts; hard work
  2. adv
    with strenuous efforts; painstakingly
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Definitions (HSK3.0)
  1. HSK3 七一九级词汇表 #2451
Examples (粵典–words.hk)
  1. Cantonese
    一番苦心
    一番苦心
    jat1 faan1 fu2 sam1
    • plenty of good intentions
  2. Cantonese
    我苦心劝阿松,但系佢就置若罔闻。
    我苦心勸阿松,但係佢就置若罔聞。
    ngo5 fu2 sam1 hyun3 aa3 cung4, daan6 hai6 keoi5 zau6 zi3 joek6 mong5 man4.
    • I gave A-chung my advice with good intention, but he turned a deaf ear on it.
  3. Cantonese
    佢煞费苦心谂咗好耐先谂到解决办法。
    佢煞費苦心諗咗好耐先諗到解決辦法。
    keoi5 saat3 fai3 fu2 sam1 lam2 zo2 hou2 noi6 sin1 lam2 dou2 gaai2 kyut3 baan6 faat3.
    • She has spent much time and effort to come up with a solution.
  4. Cantonese
    佢苦心经营咗廿年嘅公司,一晚就化为乌有。
    佢苦心經營咗廿年嘅公司,一晚就化為烏有。
    keoi5 fu2 sam1 ging1 jing4 zo2 jaa6 nin4 ge3 gung1 si1, jat1 maan5 zau6 faa3 wai4 wu1 jau5
    • The company that he had worked for twenty years has disintegrated in one night.
  5. Cantonese
    苦心研究
    苦心研究
    fu2 sam1 jin4 gau3
    • painstaking study or research