0 present participle of vow
1 to make a determined decision or promise to do something:
[ + (that) ] The guerrillas vowed (that) they would overthrow the government.
[ + to infinitive ] After the awful meals we had last Christmas, I vowed to do more of the cooking myself.
After a lengthy and painful divorce, she vowed never to remarry.
She has vowed to remain true to the president whatever happens.
Tamir, one of several sons of the exiled ruler, vowed he would liberate his country from the tyrant.
He was pardoned only after officially vowing to refrain from political commentary or activity.
When he does so, he is vowing not only to her, but to the freedom he yearns for and believes in as a possible outcome for his benighted life.
While vowing undying love for them, he was having the scaffolds erected.