THESAURUS
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, sink down, 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
ROGET THESAURUS
cave in
Submission
VB
succumb, submit, yeild, bend, resign, defer to, lay down one's arms, deliver up one's arms, lower colors, haul down colors, strike one's flag, strike colors, surrender, surrender at discretion, cede, capitulate, come to terms, retreat, beat a retreat, draw in one's horns, give way, give round, give in, give up,
cave in, suffer judgment by default, bend, bend to one's yoke, bend before the storm, reel back, bend down, knuckle down, knuckle to, knuckle under, knock under, eat dirt, eat the leek, eat humble pie, bite the dust, lick the dust, be at one's feet, fall at one's feet, craven, crouch before, throw oneself at the feet of, swallow the leek, swallow the pill, kiss the rod, turn the other cheek, avaler les couleuvres, gulp down, obey, kneel to, bow to, pay homage to, cringe to, truckle to, bend the neck, bend the knee, kneel, fall on one's knees, bow submission, courtesy, curtsy, kowtow, pocket the affront, make the best of, make a virtue of necessity, grin and abide, grin and bear it, shrug the shoulders, resign oneself, submit with a good grace.
Concavity
VB
be concave, retire,
cave in, render concave, depress, hollow, scoop, scoop out, gouge, gouge out, dig, delve, excavate, dent, dint, mine, sap, undermine, burrow, tunnel, stave in.
Shortcoming
VB
come short of, fall short of, stop short of, come short, fall short, stop short, not reach, want, keep within bounds, keep within the mark, keep within the compass, break down, stick in the mud, collapse, flat out, come to nothing, fall through, fall to the ground,
cave in, end in smoke, miss the mark, fail, lose ground, miss stays.
