stand pat on something
stand pat (on something)
To be unyielding or inflexible in one's opinion, position, or decision. Despite laying out several convincing arguments, he stood pat on his decision about the project's direction. The coach is standing pat, even in the face of so much criticism.
stand pat (on something)
in. to stick firmly to one’s position or opinions. I thought you would stand pat in the absence of new information.