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Jyutping siu3 jam4 jam4
Pinyin xiào yín yín

Definitions (CC-CANTO)
  1. to leer [colloquial]
Definitions (粵典–words.hk)
  1. 動詞
    笑​得​好​咸濕​;​不懷​好意​噉​笑
    to smile in an unpleasant way, to give a lecherous grin
    • 琴日搭地鐵嗰陣有個阿叔笑淫淫噉望住個後生女。
      琴日搭地铁𠮶阵有个阿叔笑淫淫噉望住个后生女。
      kam4 jat6 daap3 dei6 tit3 go2 zan6 jau5 go3 aa3 suk1 siu3 jam4 jam4 gam2 mong6 zyu6 go3 hau6 saang1 neoi2.
      I saw a middle-aged guy grinning at a young girl lustfully when I was on MTR yesterday.
  2. 近義詞
    笑吟吟
Examples (粵典–words.hk)
  1. Cantonese
    琴日搭地铁𠮶阵有个阿叔笑淫淫噉望住个后生女。
    琴日搭地鐵嗰陣有個阿叔笑淫淫噉望住個後生女。
    kam4 jat6 daap3 dei6 tit3 go2 zan6 jau5 go3 aa3 suk1 siu3 jam4 jam4 gam2 mong6 zyu6 go3 hau6 saang1 neoi2.
    • I saw a middle-aged guy grinning at a young girl lustfully when I was on MTR yesterday.