Synonyms for Avalanche:

n.

blizzard, acid rain, dew, curtain, dewdrop, band, cloudburst, downpour. bonanza, cornucopia, feast, bombardment, cascade, flood, concentration, plenty, complex, torrent. pattern, proceedings, domino effect, chain reaction, process, line, train, rash, string. avalanche (noun)
roll down.
cascade (noun)
flood.
falling large mass; sudden rush of large quantity (noun)
flood, inundation, landslide, torrent, deluge.
landslip (noun)
landslide.
superfluity (noun)
exorbitance, overdose, overabundance, deluge, glut, outrageousness, inundation, landslide, superfluous, copiousness, gratuitousness, superabundance, overkill, overindulgence, excessiveness, surplus, extravagance, redundancy, immoderation, Overrunning.

v.

motion (verb)
roll down.

Other synonyms:

cloudburst, blizzard, dewdrop, dew, downpour, bonanza, cornucopia, domino effect. cascade, chain reaction, curtain, pattern, bombardment. feast, flood, proceedings, rash, complex. concentration. process, band. train. string. line. abundance
plenty.
Other relevant words:
bonanza, bombardment, concentration, blizzard, flood, line, process, roll down, pattern, torrent, downpour, cascade, band, cornucopia, train, plenty, dewdrop, chain reaction.

Usage examples for avalanche

  1. We who had grown accustomed to the sight of empty prairie, to whom the arrival of the stage from Pierre was an event, were overwhelmed by the confusion, the avalanche of people, shouting, pushing, asking questions, moving steadily across the trackless plains toward the reservation. – Land of the Burnt Thigh by Edith Eudora Kohl
  2. In him that allusion to his love had aroused a whole train of dangerous recollections; for Passion is the avalanche of the human heart- a single breath can dissolve it from its repose. – Falkland, Complete by Edward Bulwer-Lytton
  3. But all she said was, " And now, when it's past and gone, will ye tell me if Yon is what you learned folk caa' an avalanche – The Dew of Their Youth by S. R. Crockett