Cách sử dụng
The expression "a stab in the back" means betrayal or being betrayed by someone you trusted. It is used when someone you thought was your friend, ally or supporter does something hurtful or deceptive towards you, often without warning. This phrase is often used in personal relationships, politics, and business. For example, if a colleague steals your idea and presents it to the boss as their own, it could be described as a stab in the back.