Under such circumstances as these, to speak of my uncle's motives was to venture on very delicate ground.

Blade realized he was on very delicate ground and was being warned about it.

I asked, attempting to get on to less delicate ground.

"If I know anything of my daughter's nature, you will find yourself, before long, on delicate ground."

The museum's opening has also demonstrated that the history it documents is still delicate ground.

"I admit that we are on rather delicate ground as pertains to our interpretation of policy in this situation."

"Her phone call that night trod on delicate ground for a German chancellor," the paper reported.

He evidently felt that he was upon delicate ground.

I gathered that we were just coming to delicate ground.