But he has become one of the automobile industry's most formidable and visible antagonists.

I give you notice--You will find me a formidable antagonist on that point.

Otherwise, he cannot serve as a formidable antagonist to Antigone.

Consequently he was a formidable antagonist in a dispute.

Even though wounded, Slugger would be a formidable antagonist.

For a moment their most formidable antagonist was the officer in command.

On Number One the less formidable antagonist, as judged by their seconds and the officials, has the choice.

The two of them together would have been formidable antagonists indeed.

At Vanarium he was already a formidable antagonist, though only fifteen.

It would have been much simpler to order him to duel to the death with some formidable antagonist.