She refused to stoop to moral low grounds during the debate, even when provoked.

At the memorial, the elders told stories of the happy hunting grounds where their ancestors danced beneath the moonlight.

Despite their flaws, both politicians claimed moral high grounds during the debate, alienating many moderate voters.

During the meeting, the CEO's unexpected announcement cut the ground from under someone's feet, leaving him with no time to adjust his pitch.

To know one's ass from a hole in the ground is the minimum qualification for that job.

Honestly, if someone doesn't know one's head from a hole in the ground about basic safety, they shouldn't be operating heavy machinery.

The sudden resignation cuts the ground from under someone's feet, leaving them scrambling to respond.

By announcing a competing offer publicly, he was cutting the ground from under someone's feet and forcing them to reconsider their decision.