not turn a hair

Gladys and Marjorie frequently arrived home unchaperoned from dances at three o'clock in the morning, and their father did not turn a hair; perhaps he was already so white that he was incapable of showing any more marks of life's fitful fever.

He did not know how to bear being kept waiting in this way; but he did not turn a hair, possibly because there were not many to turn.

They did not turn a hair, and walked about within twenty feet of the wolf with their tails carried as gayly as though they were on exhibition at a bench show.

Even a good span with a good driver may well come to grief in trying to pass another that is stuck—for the sight and example are demoralising—but old Charlie did not turn a hair; he went steadily on, giving a brisker call and touching up his oxen here and there with light flicks.

“He did not turn a hair,” was the reply.