To show support for or defend the actions of someone in the course of a debate, argument, etc.
stand with
To back or side with; to support (in reference to literally standing a…
have someone's back
To be prepared and willing to support or defend someone.
not have a leg to stand on
To lack support, as in an argument, debate, or negotiation.
hold over
(Of a resource) To support or sustain someone for a limited period.
stand up with
To publicly support (someone).
hold someone's feet to the fire
To maintain personal, social, political, or legal pressure on someone …