To a deep degree; intensely; concentratedly (as in deep sleep or deep thought)

Having great weight or feeling heavy and uncomfortable

To sink or submerge in water

(bound form) To be lost in or addicted to a habit or state

Deep; profound; the distance from the surface to the bottom is large

(of mood, morale, etc.) low; depressed; downcast

To lower one's voice or face; to keep down or suppress

Dark or gloomy, typically describing the weather or someone's facial expression

To drop, fall, or settle to a lower level (such as the sun or a building foundation)

(bound form) Dark or pitch black, used in the word 黑沉沉 hēi​chén​chén