Correct

灰沉沉

/ huī chēn chēn / 
Strokes

Example

As an Adjective

(of sky) dusky; overcast; gloomy

1
Zuótiān
昨天
xiàwǔ
下午
tiānhuī
天灰
chēnchēn
沉沉
de
的
  
,
dàn
但
méiyǒu
没有
xiàyǔ
下雨
  
。

It was overcast yesterday afternoon, but it didn't rain.