vowed
verb (past tense)UK /vaʊd/
US /vaʊd/
Promised very strongly to do something.
She vowed to practice the piano every day.
OTHER MEANINGS
2. Made a serious, formal promise, especially in a ceremony.
They vowed to love and care for each other forever.
3. Declared firmly that something is true or will happen.
He vowed that he would never give up.
4. Dedicated or set apart by a solemn promise.
The monks vowed to live a simple life.