two-faced person 两面派
a two-faced smile 虚伪的笑容
A: I thought he was my friend, but he's actually quite two-faced.
A：我原以为他是我的朋友，但他其实相当虚伪。
B: You should be careful; he is known for being two-faced.
B：你应该小心点，他是有名的两面派。
1) 虚伪的
2) 两面派的
3) 表里不一的
1. 虚伪的，两面派的
adjective
1. Deceitful and hypocritical; behaving in a way that hides one's true intentions or character.
Synonym: hypocritical, deceitful, duplicitous