crash ((of a business) to fail); fall; break one's back; come a cropper; break back; go down the pan (имеется в виду "lavatory pan" Anglophile); implode (Alex Lilo); go down in flames (Anglophile); come a buster (Anglophile); go (о банке); phut; come a stinker; be wrecked; shipwreck; face collapse (YGA); go belly-up (to fail or collapse. Said typically of a business or other venture • He lost all his equity when the firm went belly-up in the recession of 81 Taras); go to pigs and whistles; go to the dogs; get the big bird; collapse (to break down, fail • The talks between the two countries have collapsed)

Игорь Миг

founder; fall through; fizzle

amer.

go belly-up (Val_Ships)

unravel (пример: ...the Gold Standard would eventually unravel precisely because the high interest rates <...> became politically unsustainable in view of domestic unemployment. A.Rezvov); stumble (nytimes.com Alex_Odeychuk)

fin., fig.

fail (utterly)

Gruzovik, fin.

fail utterly

idiom.

fall by the wayside (Alexander Demidov); go all pear-shaped (Liv Bliss)

inf.

in shambles (be in shambles; букв.в обломках)

jerg.

be in shambles (букв. в обломках); go to pot

jur.

burst