two–faced 
/ˈtu:ˈfeɪst/ adjective
/ˈtu:ˈfeɪst/ adjective [more two–faced; most two–faced] informal + disapproving : not honest or sincere : saying different things to different people in order to get their approval instead of speaking and behaving honestly
▪ two-faced [=hypocritical] politicians ▪ He's a two-faced liar.
▪ two-faced [=hypocritical] politicians ▪ He's a two-faced liar.
