Synonyms to sink down

cave in, back down, bowl, breach, break, break down, break in, break into, break off combat, break open, break through, breakdown, breaking up, breakup, burst in, bust in, cataclysm, catastrophe, cave, cease resistance, collapse, come apart, come unstuck, concave, conk out, crack-up, crash, crumble, cup, debacle, decline, deflate, deflation, disaster, dish, disintegrate, droop, drop, fade, fail, faint, fall in, fizzle out, flag, flop, flop down, flump, flump down, fold, fold up, force open, founder, give ground, give in, give out, give up, give way, go down, go downhill, go soft, go to pieces, hit the skids, hollow, hollow out, implode, implosion, languish, lapse, lower, peg out, peter out, pine, plop, plop down, plump, poop out, prize open, prostration, puncture, quit the field, rupture, sag, set, settle, settle down, shipwreck, sink, slouch, slump, slump down, smash, smashup, split open, stove in, submerge, subside, succumb, swag, sway, tear open, topple, topple down, topple over, total loss, totter, washout, weaken, wear away, wear thin, wilt, wrack, wreck, yield, abri, air-raid shelter, antre, bend, bomb