粵典 (words.hk)Hong KongWord
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; a shifty-eyed person with a crafty and wily look ; literally 'to have the head of a snake and eyes of a rat')
形容詞蛇頭鼠眼
se4 tau4 syu2 ngaan5included in 4 dictionaries
se4 tau4 syu2 ngaan5
· included in 4 dictionaries粵典 (words.hk)Hong KongWord
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; a shifty-eyed person with a crafty and wily look ; literally 'to have the head of a snake and eyes of a rat')
形容詞維基辭典YuePhrase
Original phonetic: /sɛː²¹ tʰɐu̯²¹ syː³⁵ ŋaːn¹³/
to look ugly and shifty; to be obnoxious in appearance and cunning-looking
粵語辭源: 357_5CantonWord
Original phonetic: se4 teo4 xu2 ngan5
賊頭賊眼。（饒秉才等：2020：376）
References:
- 我看這嚴二～，大非良善之輩。（清·佚名《海公大紅袍全傳》卷十第十回葉二，清道光刊本）
廣州方言詞典: 588CantonWord
形容人的相貌，象徵陰險、狡猾