Correct

死劲儿

/ sǐjìnr / 
Strokes

Definition

erhua variant of 死劲[sǐ jìn]

Example

As a Noun

all one's strength/might

1
Qǐng
请
dàjiā
大家
yòng
用
sǐ
死
jìnr  
劲儿
  
。

Please bring all your strength into play.

2
Sǐ
死
jìnr  
劲儿
tuī
推
kǎchē
卡车

push a truck with all their might

As a Verb

bring all one's strength into play; muster (up)/summon all one's strength; do with all one's might/strength

3
Sǐ
死
jìnr  
劲儿
dīngzhù
盯住
mǒurén
某人

stare at sb; fix/fasten one's eyes on sb