vowed

I can’t tell you the person’s name because I have vowed never to let it cross my lips.

All her affection for Geraldine turned to bitter hate and she vowed that she should never marry Bertram.

“I’ll be haunting the post office Wednesday,” vowed Diana.

They had met and passed each other on the street a dozen times without any sign of recognition and every time Anne had held her head a little higher and wished a little more earnestly that she had made friends with Gilbert when he asked her, and vowed a little more determinedly to surpass him in the examination.