The term "two-face" is often used to describe someone who is deceitful or insincere, but there are other words that can be used to convey a similar meaning. For instance, the word "duplicity" refers to the act of deliberately being deceitful or two-faced. Other synonyms for "two-face" include "hypocrite," "double-dealer," "deceiver," "fraud," "charlatan," "impostor," and "pretender." These words all describe someone who is not trustworthy and may have ulterior motives. It is important to recognize these traits in people and to be cautious when dealing with those who exhibit them, as they may not have your best interests at heart.