死心

to give up / to admit failure / to drop the matter / to reconcile oneself to loss / to have no more illusions about

to die / impassable / uncrossable / inflexible / rigid / extremely / damned

heart / mind / intention / center / core / CL:顆|颗[ke1],個|个[ge4]

stubborn / obstinate / having a one-track mind

to be hell-bent on / dead set on sth / unswerving

see 死心塌地[si3 xin1 ta1 di4]

unwilling to give up / unresigned