And there was an ever-growing number of still more formidable adversaries.

"It is a formidable adversary, which springs up in several places at once inside the prostate."

In their own right, though, they were formidable adversaries.

He had not realized there would be such a formidable adversary between him and his goal.

The fourth man on the list was to face a formidable adversary.

When it did, he would be a formidable adversary.

The Leader had these two formidable adversaries to deal with.

Between her intelligence and looks she was a formidable adversary.

But governors like the discounts, and they are formidable political adversaries.

There, however, he and much of his army were met by another equally formidable adversary, the plague.