The phrase "unsteady ground" is correct and usable in written English.
You can use the phrase when referring to physical or metaphorical unstable foundations in a situation. Example: "The company financials were on unsteady ground, so the board decided to secure additional investments."
Without an agreement, Mr. Barak is on unsteady ground.
Meanwhile supporting pylons were rammed five feet into the unsteady ground.
Fighters from Al Aksa Martyrs Brigades, a militant group loyal to Mr. Arafat's Fatah organization, seemed to be on similarly unsteady ground.
Despite its devoted fan base, "Friday Night Lights" has been on unsteady ground almost since the pilot and had to stage several fourth-quarter comebacks just to stay on the air as long as it did.
Prime Minister Ehud Barak's government disintegrated, as one right-leaning party after another quit in protest of anticipated concessions to the Palestinians, leaving him on unsteady ground on the eve of his departure to a summit meeting.
Prime Minister Ehud Barak's government disintegrated today as one right-leaning party after another quit in protest against anticipated concessions to the Palestinians, leaving him on unsteady ground on the eve of his departure to the Camp David summit meeting.
Many were bracing for the trials of adolescence at the time of the attacks, only to find themselves on unsteady new ground.
Perhaps that's the message we need to take away from today's result: none of us can occupy the unsteady moral high ground without looking down into the depths.
The results are also compared with the results of a theoretical analysis of the unsteady forces on ground vehicles in high cross winds.
I felt unsteady, as if the ground were swaying.
I imagine the ground felt tenuous, unsteady, strange.
