break a vow

He'd broken his vow to himself never to go back to.

If one man had broken his vow, why should people not suspect that others might also be doing so?

But I broke my vow to save that old woman's life.

But in 1964 it hadn't occurred to me to break my vow of secrecy.

He had to believe that or he'd soon be breaking his vow to protect her.

So when any one wanted to break his vow he had no difficulty in discovering a very good reason for it.

She broke her vow of silence a bit desperately, though, after a few more minutes.

He was going to break his vow because of you!

She had it now, an excuse to break her vow.

Had he simply broken his vow, no one would ever have known.