swore, vowed
Tom juró su inocencia.
Tom swore his innocence.
Juró no volver a confiar en ella.
He swore he would never trust her again.
Angueran juró encerrar con llave al mago y a su Libro.
Angueran swore to lock up the wizard and his Book.
— Los Visitantes (1993)
Tom juró.
Tom swore.
Juró sobre la Biblia decir la verdad, teniente.
He swore on the Bible to tell the truth, Lieutenant.