give up; admit defeat
No te vas a dar por vencido, ¿verdad?
You’re not going to give up, are you?
No me puedo dar por vencido ahora.
I can't give up now.
No puedo creer que Tom simplemente se vaya a dar por vencido.
I can't believe Tom is just going to give up.
Tom no se quiere dar por vencido.
Tom refuses to give up.
Aún no me quiero dar por vencido.
I still don't want to give up.