liǎng​miàn​sān​dāo

double-dealing

Senses

两面三刀/ 兩面三刀 liǎng​miàn​sān​dāo double-dealing

two-faced; acting one way to someone's face and another way behind their back; used to describe someone who is treacherous or engages in backstabbing

References

antonym 表里如一/表裡如一 → 两面三刀/兩面三刀