have someone's back

• cover someone's back
• have got someone's back
• get someone's back

• IPA^(key): /hæv ˌsʌmwʌnz ˈbæk/

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have someone's back (third-person singular simple present has someone's back, present participle having someone's back, simple past and past participle had someone's back)

1. (idiomatic) To be prepared and willing to support or defend someone.

   If you ever need help, just ask. You know I have your back.

   • 2022 October 5, Rowena Mason, quoting Liz Truss, “Liz Truss promises ‘growth, growth and growth’ in protest-hit speech”, in The Guardian‎:

     Liz Truss has promised Britons she has “got your back” and set out a plan for “growth, growth and growth” in a conference speech disrupted by protesters asking who voted for her plan.

• have got someone's six (chiefly military and law enforcement slang)