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Jyutping joek6 gau2
Pinyin ruò jiǔ

Definitions (Wiktionary)
  1. adv, Teochew
    how long (in terms of time)
    (syn.) 多久, 幾下兒, 若久, 幾恁長久, 偌久, 偌久 GT, 幾久, 多少辰光, GT - General Taiwaneseno specific region identified), 幾耐