1.  break down(v = verb.competition) crush - make ineffective; "Martin Luther King tried to break down racial discrimination"
is one way to alter, change, modify
Derived form noun breakdown₁
Sample sentences: Somebody ----s something; Something ----s something

2.  break down(v = verb.cognition) analyse, analyze, dissect, take apart - make a mathematical, chemical, or grammatical analysis of; break down into components or essential features; "analyze a specimen"; "analyze a sentence"; "analyze a chemical compound"
Derived form noun breakdown₄
Sample sentences: Somebody ----s something

3.  break down(v = verb.emotion) lose it, snap - lose control of one's emotions; "When she heard that she had not passed the exam, she lost it completely"; "When her baby died, she snapped"
is one way to act, behave, do
Derived form noun breakdown₂
Sample sentences: Sam and Sue break down

4.  break down(v = verb.change) break, conk out, die, fail, give out, give way, go, go bad - stop operating or functioning; "The engine finally went"; "The car died on the road"; "The bus we travelled in broke down on the way to town"; "The coffee maker broke"; "The engine failed on the way to town"; "her eyesight went after the accident"
is one way to change
Derived form noun breakdown₃
Sample sentences: These cars won't break down

5.  break down(v = verb.motion) collapse, crumble, crumple, tumble - fall apart; "the building crumbled after the explosion"; "Negotiations broke down"
is one way to change integrity
Sample sentences: Something ----s

6.  break down(v = verb.contact) - cause to fall or collapse;
is one way to break, bust
Sample sentences: They want to break down the doors

7.  break down(v = verb.change) break up, decompose - separate (substances) into constituent elements or parts;
is one way to separate
Sample sentences: Somebody ----s somebody; Something ----s something

8.  break down(v = verb.body) collapse - collapse due to fatigue, an illness, or a sudden attack;
is one way to get, have, suffer, sustain
Derived form noun breakdown₂
Sample sentences: Sam and Sue break down

VB  be worse, be deteriorated, become worse, become deteriorated Adj, have seen better days, deteriorate, degenerate, fall off, wane, ebb, retrograde, decline, droop, go down, go downhill, go from bad to worse, go farther and fare worse, jump out of the frying pan into the fire, run to seed, go to seed, run to waste swale, sweal, lapse, be the worse for, sphacelate: break, break down, spring a leak, crack, start, shrivel, fade, go off, wither, molder, rot, rankle, decay, go bad, go to decay, fall into decay, fall into the sear and yellow leaf, rust, crumble, shake, totter, totter to its fall, perish, die, deteriorate, weaken, put back, set back, taint, infect, contaminate, poison, empoison, envenom, canker, corrupt, exulcerate, pollute, vitiate, inquinate, debase, embase, denaturalize, denature, leaven, deflower, debauch, defile, deprave, degrade, ulcerate, stain, discolor, alloy, adulterate, sophisticate, tamper with, prejudice, pervert, prostitute, demoralize, brutalize, render vicious, embitter, acerbate, exacerbate, aggravate, injure, impair, labefy, damage, harm, hurt, shend, scath, scathe, spoil, mar, despoil, dilapidate, waste, overrun, ravage, pillage, wound, stab, pierce, maim, lame, surbate, cripple, hough, hamstring, hit between wind and water, scotch, mangle, mutilate, disfigure, blemish, deface, warp, blight, rot, corrode, erode, wear away, wear out, gnaw, gnaw at the root of, sap, mine, undermine, shake, sap the foundations of, break up, disorganize, dismantle, dismast, destroy, damnify, do one's worst, knock down, deal a blow to, play havoc with, play sad havoc with, play the mischief with, play the deuce with, play the very devil with, play havoc among, play sad havoc among, play the mischief among, play the deuce among, play the very devil among, decimate.

N  deterioration, debasement, wane, ebb, recession, retrogradation, decrease, degeneracy, degeneration, degenerateness, degradation, depravation, depravement, devolution, depravity, demoralization, retrogression, masochism, impairment, inquination, injury, damage, loss, detriment, delaceration, outrage, havoc, inroad, ravage, scath, perversion, prostitution, vitiation, discoloration, oxidation, pollution, defoedation, poisoning, venenation, leaven, contamination, canker, corruption, adulteration, alloy, decline, declension, declination, decadence, decadency, falling off, caducity, decrepitude, decay, dilapidation, ravages of time, wear and tear, corrosion, erosion, moldiness, rottenness, moth and rust, dry rot, blight, marasmus, atrophy, collapse, disorganization, delabrement (destruction), aphid, Aphis, plant louse, puceron, vinefretter, vinegrub, wreck, mere wreck, honeycomb, magni nominis umbra, jade, plug, rackabones, skate, tackey, tacky, have seen better days, deteriorate, degenerate, fall off, wane, ebb, retrograde, decline, droop, go down, go downhill, go from bad to worse, go farther and fare worse, jump out of the frying pan into the fire, run to seed, go to seed, run to waste swale, sweal, lapse, be the worse for, sphacelate: break, break down, spring a leak, crack, start, shrivel, fade, go off, wither, molder, rot, rankle, decay, go bad, go to decay, fall into decay, fall into the sear and yellow leaf, rust, crumble, shake, totter, totter to its fall, perish, die, deteriorate, weaken, put back, set back, taint, infect, contaminate, poison, empoison, envenom, canker, corrupt, exulcerate, pollute, vitiate, inquinate, debase, embase, denaturalize, denature, leaven, deflower, debauch, defile, deprave, degrade, ulcerate, stain, discolor, alloy, adulterate, sophisticate, tamper with, prejudice, pervert, prostitute, demoralize, brutalize, render vicious, embitter, acerbate, exacerbate, aggravate, injure, impair, labefy, damage, harm, hurt, shend, scath, scathe, spoil, mar, despoil, dilapidate, waste, overrun, ravage, pillage, wound, stab, pierce, maim, lame, surbate, cripple, hough, hamstring, hit between wind and water, scotch, mangle, mutilate, disfigure, blemish, deface, warp, blight, rot, corrode, erode, wear away, wear out, gnaw, gnaw at the root of, sap, mine, undermine, shake, sap the foundations of, break up, disorganize, dismantle, dismast, destroy, damnify, do one's worst, knock down, deal a blow to, play havoc with, play sad havoc with, play the mischief with, play the deuce with, play the very devil with, play havoc among, play sad havoc among, play the mischief among, play the deuce among, play the very devil among, decimate, Adj, unimproved &c (improve), deteriorated, altered, altered for the worse, injured, sprung, withering, spoiling, on the wane, on the decline, tabid, degenerate, marescent, worse, the worse for, all the worse for, out of repair, out of tune, imperfect, the worse for wear, battered, weathered, weather-beaten, stale, passe, shaken, dilapidated, frayed, faded, wilted, shabby, secondhand, threadbare, worn, worn to a thread, worn to a shadow, worn to the stump, worn to rags, reduced, reduced to a skeleton, far gone, tacky, decayed, moth-eaten, worm-eaten, mildewed, rusty, moldy, spotted, seedy, time-worn, moss-grown, discolored, effete, wasted, crumbling, moldering, rotten, cankered, blighted, tainted, depraved, decrepid, decrepit, broke, busted, broken, out of commission, hors de combat, out of action, broken down, done, done for, done up, worn out, used up, finished, beyond saving, fit for the dust hole, fit for the wastepaper basket, past work, at a low ebb, in a bad way, on one's last legs, undermined, deciduous, nodding to its fall, tottering, past cure, fatigued, retrograde, deleterious, out of the frying pan into the fire, agrescit medendo, what a falling off was there!.

VB  fail, be unsuccessful, not succeed, make vain efforts, do in vain, labor in vain, toil in vain, flunk, lose one's labor, take nothing by one's motion, bring to naught, make nothing of, wash a blackamoor white, roll the stones of Sisyphus, do by halves, lose ground, fall short of, miss, miss one's aim, miss the mark, miss one's footing, miss stays, slip, trip, stumble, make a slip, blunder, make a mess of, make a botch of, bitch it, miscarry, abort, go up like a rocket and come down like the stick, come down in flames, get shot down, reckon without one's host, get the wrong pig by the tail, get the wrong sow by the ear, limp, halt, hobble, titubate, fall, tumble, lose one's balance, fall to the ground, fall between two stools, flounder, falter, stick in the mud, run aground, split upon a rock, beat one's head against a stone wall, run one's head against a stone wall, knock one's head against a stone wall, dash one's head against a stone wall, break one's back, break down, sink, drown, founder, have the ground cut from under one, get into trouble, get into a mess, get into a scrape, come to grief, go to the wall, go to the dogs, go to pot, lick the dust, bite the dust, be defeated, have the worst of it, lose the day, come off second best, lose, fall a prey to, succumb, not have a leg to stand on, come to nothing, end in smoke, flat out, fall to the ground, fall through, fall dead, fall stillborn, fall flat, slip through one's fingers, hang fire, miss fire, flash in the pan, collapse, topple down, go to wrack and ruin, go amiss, go wrong, go cross, go hard with, go on a wrong tack, go on ill, come off ill, turn out ill, work ill, take a wrong term, take an ugly term, take an ugly turn, take a turn for the worse, be all over with, be all up with, explode, dash one's hopes, defeat the purpose, sow the wind and reap the whirlwind, jump out of the frying pan into the fire, go from the frying pan into the fire.

N  destruction, waste, dissolution, breaking up, diruption, disruption, consumption, disorganization, fall, downfall, devastation, ruin, perdition, crash, eboulement, smash, havoc, delabrement, debacle, break down, break up, fall apart, prostration, desolation, bouleversement, wreck, wrack, shipwreck, cataclysm, washout, extinction, annihilation, destruction of life, knock-down blow, doom, crack of doom, destroying, demolition, demolishment, overthrow, subversion, suppression, abolition, biblioclasm, sacrifice, ravage, razzia, inactivation, incendiarism, revolution, extirpation, beginning of the end, commencement de la fin, road to ruin, dilapidation, sabotage, destroyed, perishing, trembling to its fall, nodding to its fall, tottering to its fall, in course of destruction, extinct, all-destroying, all-devouring, all-engulfing, destructive, subversive, ruinous, devastating, incendiary, deletory, destroying, suicidal, deadly, with crushing effect, with a sledge hammer, delenda est Carthago, dum Roma deliberat Saguntum perit, ecrasez l'infame.

VB  be destroyed, perish, fall to the ground, tumble, topple, go to pieces, fall to pieces, break up, crumble to dust, go to the dogs, go to the wall, go to smash, go to shivers, go to wreck, go to pot, go to wrack and ruin, go by the board, go all to smash, be all over, be all up, be all with, totter to its fall, destroy, do away with, make away with, nullify, annual, sacrifice, demolish, tear up, overturn, overthrow, overwhelm, upset, subvert, put an end to, seal the doom of, do in, do for, dish, undo, break up, cut up, break down, cut down, pull down, mow down, blow down, beat down, suppress, quash, put down, do a job on, cut short, take off, blot out, dispel, dissipate, dissolve, consume, smash, crash, quell, squash, squelch, crumple up, shatter, shiver, batter to pieces, tear to pieces, crush to pieces, cut to pieces, shake to pieces, pull to pieces, pick to pieces, laniate, nip, tear to rags, tear to tatters, crush to atoms, knock to atoms, ruin, strike out, throw over, knock down over, fell, sink, swamp, scuttle, wreck, shipwreck, engulf, ingulf, submerge, lay in ashes, lay in ruins, sweep away, erase, wipe out, expunge, raze, level with the dust, level with the ground, waste, atomize, vaporize, deal destruction, desolate, devastate, lay waste, ravage gut, disorganize, dismantle, devour, swallow up, sap, mine, blast, bomb, blow to smithereens, drop the big one, confound, exterminate, extinguish, quench, annihilate, snuff out, put out, stamp out, trample out, lay in the dust, trample in the dust, prostrate, tread under foot, crush under foot, trample under foot, lay the ax to the root of, make short work of, make clean sweep of, make mincemeat of, cut up root and branch, chop into pieces, cut into ribbons, fling to the winds, scatter to the winds, throw overboard, strike at the root of, sap the foundations of, spring a mine, blow up, ravage with fire and sword, cast to the dogs, eradicate.

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.

back down, bargain down, batten down, bear down, bear down on, bear down upon, beat down, bed down, belt down, blow down, bog down, boil down, bolt down, bow down, bowed down, break, break apart, break away, break bread, break camp, break dance, break dancing, break even, break forth, break ground, break in, break into, break loose, break of day, break of serve, break of the day, break off, break one's back, break open, break out, break seal, break short, break someone's heart, break the ice, break the law, break the news, break through, break up, break water, break wind, break with, bring down, broken down, brush down, buckle down, bunk down, burn down, call down, calm down, camp down, cascade down, cast down, choke down, chop down, clamp down, clamp down on, climb down, close down, coffee break, come down, come down on, cool down, count down, crack down, crack down on, cut down, dash down, deep down, die down, doss down, down, down at the heel, down easter, down feather, down in the mouth, down pat, down payment, down quark, down syndrome, down the drain, down the stairs, down town, down under, drag down, dress down, dressing down, drink down, drop down, duck down, dwindle down, ebb down, face down, fall down, fast break, fight down, flag down, flap down, flump down, flush down, freeze down, garbage down, get down, go down, go down on, goose down, grind down, gun down, hammer break, hampshire down, hand down, handed down, hands down, hanging down, have down, hold down, hoot down, hose down, hunker down, hunkered down, hunt down, john l. h. down, jot down, jumping up and down, keep down, kick down, kip down, knock down, knuckle down, lay down, lay down the law, let down, letting down, lie down, live down, load down, loaded down, look down on, look down upon, low down, make and break, mark down, melt down, mow down, nail down, narrow down, pare down, peg down, pin down, pipe down, place down, plank down, play down, plonk down, plump down, plunk down, pour down, press down, press down on, pull down, push down, put down, quiet down, rain down, ram down, ratchet down, rattle down, remain down, roll down, rope down, round down, rub down, run down, sag down, scale down, send down, service break, set down, settle down, shake down, shoot down, shout down, shower down, shut down, simmer down, sit down, sit down strike, sit down with, sleek down, slick down, slide down, slim down, slow down, slowing down, sluice down, split down, sponge down, spring break, stamp down, stand down, stare down, steady down, step down, stepping down, strike down, strip down, swan's down, swill down, swoop down upon, take down, take lying down, talk down, tamp down, tax break, tea break, tear down, tearing down, throw down, thumbs down, tie down, tone down, toned down, touch down, track down, tramp down, tread down, trim down, tune down, turn down, turn thumbs down, turn upside down, up and down, upside down, vote down, wash down, water down, watered down, wear down, weigh down, weighed down, weight down, weighted down, whack down, whittle down, wolf down, write down, written down