dī​chén

deep

低沉 dī​chén
deep adjective
low-pitched and deep voice

He told me the secret in a low, deep voice.

downcast adjective
low-spirited, depressed, or dejected mood

He was in very low spirits after the experiment failed.

overcast adjective
gloomy or overcast weather

The overcast sky looked very gloomy.

Frequency

Movie subtitles
1.31 per million appears in 1% of films
Written text
3.50 per million

Sources

Definitions
CC-CEDICT