He could not compel himself to believe she would prove unfaithful.

I know, if I should prove unfaithful to the Cause, that he would kill me.

Should a wife prove unfaithful while her husband is away, he will lose his life in the enemy's country.

I often thought of this, until I found it necessary to repress the hope, lest I should prove unfaithful to my trust.

Margaret now began to feel anxious, fearing that after all the trust she had reposed in Paul, he might yet prove unfaithful.

The door is locked against England, and Scotland must prove unfaithful to herself before the Southrons can again set feet on her borders.

On the other hand, it was customary in the North of England to rub a young woman with pease-straw should her lover prove unfaithful:

And God knows I treated the lady with courtesy; for, rather than prove unfaithful to my wife Polly, I bid her take herself away.

Pigeons, differently from any other domesticated animal, can easily be mated for life, and, though kept with other pigeons, rarely prove unfaithful to each other.

But not a single city had thus far proved unfaithful to her.

That part of our nation which has proved unfaithful we must not reject.

Had I proved unfaithful in my first office I could not have gone to higher offices.

He had proved unfaithful to his friend.

The knight laughed at the bare idea of his proving unfaithful to his beloved, and his vows were sincere.

"When the knight proves unfaithful the most gracious lady must suffer resentment."

His second wife, Anne of Saxony, having proved unfaithful to him, he married, while she was yet alive, Charlotte of Bourbon.