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Jyutping dak1 hou3 gan2 jiu3
Pinyin dé hǎo jǐn yào

Definitions (Wiktionary)
  1. adv, Cantonese
    a lot, very much, like crazy, amazingly
    (syn.) 得緊要, 得紧要
Examples (粵典–words.hk)
  1. Cantonese
    泳池啲水冻得好紧要。
    泳池啲水凍得好緊要。
    wing6 ci4 di1 seoi2 dung3 dak1 hou2 gan2 jiu3.
    • The swimming pool is so cold.
  2. Cantonese
    你对眼系咪有啲问题?我见你对眼射厘得好紧要下㖞。
    你對眼係咪有啲問題?我見你對眼射厘得好緊要下喎。
    nei5 deoi3 ngaan5 hai6 mai6 jau5 di1 man6 tai4? ngo5 gin3 nei5 deoi3 ngaan5 se6 lei1 dak1 hou2 gan2 jiu3 haa5 wo3.
    • Do you have an eye problem? Your eyes are looking in different directions.
  3. Cantonese
    今朝起身头痛得好紧要。
    今朝起身頭痛得好緊要。
    gam1 ziu1 hei2 san1 tau4 tung3 dak1 hou2 gan2 jiu3.
    • I woke up with a terrible headache this morning.
  4. Cantonese
    股市之前跌得好紧要,但系而家又回升返。
    股市之前跌得好緊要,但係而家又回升返。
    gu2 si5 zi1 cin4 dit3 dak1 hou2 gan2 jiu3, daan6 hai6 ji4 gaa1 jau6 wui4 sing1 faan1.
    • The stock market fell drastically, but now it's on rise again.