But the trial was not of long duration, and the descent proved both rapid and perilous.

No one knew the true nature of the ronin who had held the long-dog overnight, but those few hours might prove perilous.

The investigation has proved perilous to the careers of investigators.

A second and third world proved equally perilous.

Some dangers are inherent in the land itself, with wildlife, terrain and weather conditions that could prove perilous.

Aurora's passage from the ice towards safety proved slow and perilous.

This deficiency was likely to prove perilous in an emergency so critical.

The alternative, the strategist said, was for him to engage in an open-ended debate that could prove perilous.

His touch proved more perilous than any jump.

What I 70 Mary Stewart have asked you to do will not be easy and may indeed prove perilous.