se negaron

they refused

→ se
phrase Common #5,528
they refused Past-tense form of negarse, commonly followed by a + infinitive to say what someone refused to do.
SP: Se negaron a esperar más tiempo.
EN: They refused to wait any longer.

Todas se negaron, claro.

They all refused, of course.

— La doble vida de Verónica (1991)

Se negaron al bautismo.

They refused baptism.

— Voraz (2017)

"Le negó oportunidades a quienes se negaron".

He denied opportunities to those who refused.

— TÁR (2022)

Los dueños de la mina se negaron a negociar.

The mine owners refused to negotiate.

Se negaron.

They refused.

Casi todos los trabajadores se negaron a trabajar de noche.

Almost all the workers refused to work at night.

Ellos se negaron a ayudarla.

They refused to help her.

Ellos se negaron a ayudarnos.

They refused to help us.

Se negaron a liberar a los rehenes.

They refused to release the hostages.