1 founder, submerge, go down, go under, plunge, descend, be engulfed:
The ship was struck below the water-line and sank in minutes.
2 subside, cave in, collapse, subside, settle, drop, fall in, go down, slip away:
The earth suddenly sank beneath our feet.
3 descend, go down, drop, fall, move down or downward(s), go down to or on:
The parachute slowly sank to the ground. When he saw the statue move, he sank to his knees, terrified
4 decline, weaken, worsen, degenerate, subside, deteriorate, flag, fail, diminish, die, expire; languish; Colloq go downhill:
Grandfather, sinking fast, summoned the family to his bedside.
5 disappear, vanish, fade away, evaporate; set, go down, descend, drop:
After a meteoric rise, many rock stars sink into oblivion. As the sun sank slowly in the west, we returned to our hotel to reminisce about our day at the pyramids
6 settle, precipitate, descend, drop:
After a few minutes, the sand sinks to the bottom.
7 bore, put down, drill, dig, excavate, drive:
A special shaft will be sunk just for ventilating the mine.
8 submerge, immerse, plunge:
He sank his hand deep into the mud and came up with a small box.
9 stoop, bend, get, go, lower or humble oneself:
I never dreamt that he would sink so low as to beg in the streets.
10 invest, venture, risk, put:
He sank his life's savings into his son's business, only to see it go bankrupt
11 sink in. be understood, penetrate, register, make an impression on, get through to:
How many times do I have to tell you in order for it to sink in?
12 basin, wash-basin, wash-bowl, lavabo; Church font, stoup, piscina:
The kitchen has a large double sink.
13 cesspool, cesspit, pit, hell-hole, den of iniquity, sink-hole, Colloq dive:
We found him playing piano in some sink frequented by the worst element of society.