HSK V7-9
Correct

死心

/ sǐxīn / 
Strokes

Definition

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

Example

As a Verb

give up hope/idea

1
Nǐ
你
háishi
还是
sǐ
死
le
了
zhè
这
tiáo
条
xīn
心
bā
吧
  
。

You'd better give up hope for it.

2
Bù
不
sǐxīn
死心

not give up hope