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Jyutping se4 tau4 syu2 ngaan5
Pinyin shé tóu shǔ yǎn

Definitions (CC-CANTO)
  1. (slang) (adjective) (of facial features) wily and devious looking; untrustworthy appearance; shifty looking
Definitions (粵典–words.hk)
  1. 形容詞
    形容​樣貌​睇​起​嚟​狡猾​奸詐​,​唔​可靠​、​唔​老實
    used to describe a cunning-looking person who is unreliable and dishonest; literally 'to have the head of a snake and eyes of a rat'
    • 做乜依家政府揾埋啲咁嘅人做高官?個個都蛇頭鼠眼,仲衰過做賊。
      做乜依家政府揾埋啲咁嘅人做高官?个个都蛇头鼠眼,仲衰过做贼。
      zou6 mat1 ji1 gaa1 zing3 fu2 wan2 maai4 di1 gam2 ge2 jan4 zou6 gou1 gun2? go3 go3 dou1 se4 tau4 syu2 ngaan5, zung6 seoi1 gwo3 zou6 caak2.
      Why does the government nowadays often hire scumbags as high rank officials? They all look crafty and unreliable, even worse than thieves.
  2. 近義詞
    獐頭鼠目、鬼鬼鼠鼠
Definitions (Kaifangcidian)
  1. 賊頭賊眼 – 贼头贼眼
  2. 獐頭鼠目 – 獐头鼠目
  3. 賊眉鼠眼 – 贼眉鼠眼
  4. 鬼頭蛤蟆眼 – 鬼头蛤蟆眼
Examples (粵典–words.hk)
  1. Cantonese
    做乜依家政府揾埋啲咁嘅人做高官?个个都蛇头鼠眼,仲衰过做贼。
    做乜依家政府揾埋啲咁嘅人做高官?個個都蛇頭鼠眼,仲衰過做賊。
    zou6 mat1 ji1 gaa1 zing3 fu2 wan2 maai4 di1 gam2 ge2 jan4 zou6 gou1 gun2? go3 go3 dou1 se4 tau4 syu2 ngaan5, zung6 seoi1 gwo3 zou6 caak2.
    • Why does the government nowadays often hire scumbags as high rank officials? They all look crafty and unreliable, even worse than thieves.