Disruption; coming apart; a separation and dispersion of the parts or members; as, a break-up of a meeting, assembly, or dinner party; the break-up of a spacecraft on re-entry into the atmosphere. [1913 Webster]
the termination of a relationship; a break-up of the government; the break-up of a marriage; the break-up of a business partnership; the break-up of a comedy team. [WordNet 1.5]

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OXFORD DICTIONARY

breakup, n.
1 disintegration, collapse.
2 dispersal.

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THESAURUS

breakup

ablation, analysis, analyzation, anatomizing, anatomy, apoplexy, assay, assaying, atomization, biodegradability, biodegradation, bloodbath, bloodless revolution, blue ruin, bouleversement, breakdown, breaking down, breaking up, carnage, cataclysm, catastrophe, cave, cave-in, clean slate, clean sweep, climax, collapse, computer revolution, consumption, convulsion, corrosion, corruption, counterrevolution, crack-up, crash, crumbling, damnation, deactivation, debacle, decay, decimation, decomposition, degradability, degradation, demobilization, depredation, desolation, despoilment, despoliation, destruction, detachment, devastation, diaspora, diastrophism, diffusion, dilapidation, disaster, disbandment, disintegration, disjunction, dismissal, disorganization, dispersal, dispersion, disruption, dissection, dissolution, division, docimasy, erosion, exfoliation, fit, fragmentation, gravimetric analysis, havoc, hecatomb, holocaust, incoherence, mildew, mold, overthrow, overturn, oxidation, oxidization, palace revolution, paroxysm, parting, perdition, proximate analysis, quake, quantitative analysis, radical change, ravage, ravages of time, reduction to elements, release, resolution, revolt, revolution, revolutionary war, revulsion, ruin, ruination, rust, scaling, scattering, segmentation, semimicroanalysis, separation, shambles, shattering, shipwreck, slaughter, smash, smashup, spasm, split-up, spoilage, spoliation, striking alteration, stroke, subdivision, subversion, sweeping change, tabula rasa, technological revolution, temblor, tidal wave, total change, total loss, transilience, tsunami, undoing, upheaval, upset, vandalism, violent change, washout, waste, wear, wear and tear, wrack, wrack and ruin, wreck

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ROGET THESAURUS

breakup

Divorce

N divorce, divorcement, separation, judicial separation, separate maintenance, separatio a mensa et thoro, separatio a vinculo matrimonii, trial separation, breakup, annulment, widowhood, viduity, weeds, widow, widower, relict, dowager, divorcee, cuckold, grass widow, grass widower, merry widow.

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