Unchallenged

I cannot let it go unchallenged.

Japan's competitiveness in camera making is unchallenged.

But I could not rest, Watson, I could not sit quiet in my chair, if I thought that such a man as Professor Moriarty were walking the streets of London unchallenged.

Unchallenged faith in books is worse than illiteracy.

The rapid urbanization that Algeria experienced immediately after its independence loosened the grip of the country's unchallenged traditions and cultural taboos.

Your triumphs will never go unchallenged by me.

Roman Sharonov rose unchallenged to head a corner wide, while diminutive winger Gokdeniz Karadeniz ghosted in with a diving header from the edge of the six-yard box that was acrobatically kept out by Gomes.

Many of his crazy ideas remained unchallenged.

The intruders went unchallenged.