student asking question

What does "have someone's back" mean?

teacher

Native speaker’s answer

Rebecca

"Have someone's back" is an idiom that means you are willing to help and defend someone, usually someone close to you, when they need it. "Have someone's back" is a general expression. Ex: I knew she had my back when I forgot my wallet and she paid for my lunch. Ex: I have my brother's back, I always make sure he is doing well.

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