Riffraff

from WordNet (r) 3.0 (2006)

riffraff
    n 1: disparaging terms for the common people [syn: {rabble},
         {riffraff}, {ragtag}, {ragtag and bobtail}]

from The Collaborative International Dictionary of English v.0.48

Riffraff \Riff"raff`\, n. [OE. rif and raf every particle, OF.
   rif et raf. CF. {Raff}, and 1st {Rifle}.]
   Sweepings; refuse; the lowest order of society. --Beau. & Fl.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

46 Moby Thesaurus words for "riffraff":
      bilge, bilgewater, canaille, carrion, cattle, chaff, clamjamfry,
      debris, dishwater, ditchwater, dregs, dregs of society, dust,
      garbage, junk, kelter, litter, lumber, masses, mob, offal,
      offscourings, offscum, proletariat, raff, ragtag and bobtail,
      refuse, rubbish, rubble, scrap, scum, scurf, sewage, sewerage,
      shoddy, slop, slops, slough, sordes, swill, swinish multitude,
      trash, truck, unwashed, vermin, waste

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