Correct

不中用

/ bùzhòngyòng /
Strokes

Definition

unfit for anything/no good/useless/(of a sick person) beyond hope

Example

As an Adjective

unfit for anything; good for nothing; of no good; useless

1
lǎo
le
  
,
zhòng
yòng
  

I'm getting old and useless.

2
Zhè
zhī
zhōng
kàn
zhòngyòng
中用
  

This pen looks good but writes badly.