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Jyutping lou5 kai3
Pinyin lǎo qì

Definitions (CC-CANTO)
  1. a former lover; a regular customer of a prostitute [colloquial]
Definitions (粵典–words.hk)
  1. 名詞、俚語
    舊​情人​嘅​俗​稱​;​又​指​婚外情​對象
    a former lover; an illicit lover(literally: foster buddy)
  2. 名詞、俚語
    嫖客
    the customer of a prostitute
    • 温心老契 - 妓女嘅入幕之賓
      温心老契 - 妓女嘅入幕之宾
      yue:温心老契 - 妓女嘅入幕之賓
      a customer who is adored true-heartedly by a prostitute and their relationship is very close
    • 飯局老契 - 妓女嘅泛泛之交
      饭局老契 - 妓女嘅泛泛之交
      yue:飯局老契 - 妓女嘅泛泛之交
      a general customer who only meet the prostitute in the dining table
  3. 近義詞
    契家佬、契家婆
Definitions (Wiktionary)
  1. noun, Cantonese
    term of endearment for prostitute or mistress , 張悅楷 (translator), 金庸, 書劍恩仇錄, part 1
    • 「老契,你咪走!」
      「老契,你咪走!」
      ― “lou5 kai3, nei5 mai5 zau2!”
      X
Examples (粵典–words.hk)
  1. Cantonese
    温心老契 - 妓女嘅入幕之宾
    温心老契 - 妓女嘅入幕之賓
    yue:温心老契 - 妓女嘅入幕之賓
    • a customer who is adored true-heartedly by a prostitute and their relationship is very close
  2. Cantonese
    饭局老契 - 妓女嘅泛泛之交
    飯局老契 - 妓女嘅泛泛之交
    yue:飯局老契 - 妓女嘅泛泛之交
    • a general customer who only meet the prostitute in the dining table
Examples (Wiktionary)
  1. Cantonese
    「老契,你咪走!」
    「老契,你咪走!」
    ― “lou5 kai3, nei5 mai5 zau2!”
    • X