But that would not prevent them from meeting on their own, at his order.

That is what I want to prevent at all costs.

He was going to prevent our marriage at all costs.

"They know that some want to prevent a vote at all costs."

They should be prevented at all costs from making records.

"You cannot prevent and prepare for war at the same time."

He wants to prevent further investigations on her cause of death at all costs.

There is therefore nothing to prevent an agreement at this second reading.

Separation was prevented at the cost of very few lives.

And of course there are people who must be prevented at all costs from learning one's own secret business.