two-faced

Definitions

Insincere and deceitful; acting in two different ways at different times to suit one's own interests.

Characterized by duplicity or double-dealing in one's relationships with others.

Examples

I cannot trust him because he is so two-faced, acting like my friend to my face while gossiping behind my back.

It was a two-faced move to praise her work in the meeting and then criticize it to the boss later that day.

Synonyms

deceitful hypocritical insincere duplicitous disingenuous double-dealing treacherous

Antonyms

sincere genuine honest truthful candid straightforward frank