to sink down

to sink into despondency; (of morale, willpower etc) to diminish; to plummet

to attack and sink (a ship)

deep; profound; (of a person) reserved; undemonstrative; (of a voice, sound etc) deep; low-pitched

(of weather) overcast; gloomy; (of a voice) low and deep; low-spirited; downcast

gloomy

dead atmosphere; lifeless; spiritless

to scuttle (a ship)

murky; dazed; befuddled; dizzy

deeply; heavily

ups and downs (of life etc); to drift along; to sink and emerge

to soak; to steep

to capsize and sink

to scuttle (a ship); to drown oneself

erythrocyte sedimentation rate (ESR)

(of the sun) to set

dark (weather, mood)

pitch-dark

to play the profound thinker

(idiom) dizzy

without news from sb (idiom)