Correct

哑火

/ yā huǒ /
Strokes

Example

As an Adjective

(of a shell, bomb, etc) unexploded; dud

1
Zhàdàn
炸弹
huǒ
le
  
,
méiyǒu
没有
rén
shòushāng
受伤
  

The bomb fizzled out, and no one was hurt.

As an Adjective

(of a person) quiet