Even the darkness at the turn of the steps worried this shrewd observer.

As a shrewd observer pointed out, this policy has its drawbacks.

The shrewd, mustached observer had found a new interest.

Even in private practice, he remained an active and shrewd observer of the political scene.

During the passage he was a shrewd observer of nature and knowledge seeker.

The shrewd observers wondered how Livia would meet this new situation; but luck seemed to be with her.

He was a man of strong prejudices and shrewd observer with a stern manner abroad.

His judgment of men and things may not always have been sound, but he was a shrewd observer of contemporary events.