What is treacherous meaning?

Treacherous means being deceitful or unreliable, intending to betray someone's trust or confidence. It can refer to a person who is untrustworthy or disloyal and may even pose a danger to others. Treacherous behavior often involves going behind someone's back or breaking promises or agreements. The term can also refer to conditions or situations that are hazardous or difficult to navigate, such as treacherous terrain or treacherous weather conditions. In general, something that is treacherous is considered untrustworthy, hazardous, or risky in some way.