lose nerve

This idea came upon him with such force as he made a step first in one direction and then in another that he began to lose nerve.

The men of the vessel seemed to lose nerve at the danger that threatened the man from across the sea.

But Sollers was not the runner to lose nerve under difficulties and did not lessen 254 the pressure on the pistons.

Really, he began to lose nerve a little—and for such a sanguine man a little was much.

Yet, through all, was the certainty that to lose nerve for one moment was to lose life.