Synonyms for Downpour:

n.

dewdrop, band, acid rain, curtain, dew, blizzard, avalanche. spate, cataract, big, niagara, overflow, freshet, cataclysm. downpour (noun)
pelter, cloudburst, waterspout, deluge, torrent, soaker.
flood (noun)
freshet, spate.
rain (noun)
monsoon, storm.
tremendous pouring of rain (noun)
cloudburst, deluge, monsoon, storm.

Other synonyms:

dew, avalanche, storm, blizzard, niagara, dewdrop. cataract, curtain, freshet, monsoon. spate. band. cataclysm. Other relevant words:
monsoon, blizzard, curtain, band, dew, freshet, niagara, dewdrop, overflow, avalanche, big, spate, cataclysm, deluge, storm, cataract.

Usage examples for downpour

  1. There might be a downpour any hour. – That Little Girl of Miss Eliza’s by Jean K. Baird
  2. Another peal of thunder was followed by a downpour of rain. – Jeanne of the Marshes by E. Phillips Oppenheim
  3. Suddenly he, who stood there singing in the midst of the downpour took a few steps to the side, saw the red shawl, the face, the big brown eyes, the astonished little open mouth; instantly his position became awkward, in surprise he looked down himself; but in the same moment a small cry was heard, the projecting branch swayed violently, the red end of the shawl disappeared in a flash, the girl's face disappeared, and there was a rustling and rustling further and further away behind the hazelbushes. – Mogens and Other Stories Mogens; The Plague At Bergamo; There Should Have Been Roses; Mrs. Fonss by Jens Peter Jacobsen