tumbledown

from The Collaborative International Dictionary of English v.0.48

Tumble-down \Tum"ble-down`\, a.
   Ready to fall; dilapidated; ruinous; as, a tumble-down house.
   [Colloq.]
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

56 Moby Thesaurus words for "tumbledown":
      battered, beat-up, beaten up, broken-down, collapsing, crumbling,
      deciduous, declining, declivitous, decrepit, decurrent, derelict,
      descendant, descending, dilapidated, disintegrating, doddering,
      down, down-reaching, downcoming, downfalling, downgoing, downhill,
      downsinking, downward, drooping, dropping, falling, groggy,
      in ruins, on the descendant, on the downgrade, plummeting,
      plunging, ramshackle, ricketish, rickety, rocky, ruined, ruinous,
      run-down, sagging, setting, shaky, sinking, slummy, spidery,
      spindly, submerging, subsiding, teetering, teetery, tottering,
      tottery, unsteady, wobbly