riffraff (n.)

• bilge
• bilgewater
• carrion
• cattle
• chaff
• debris
• dishwater
• dregs
• dust
• garbage
• junk
• kelter
• litter
• lumber
• masses
• mob
• offal
• proletariat
• raff
• refuse
• rubbish
• rubble
• scrap
• scum
• scurf
• sewage
• sewerage
• shoddy
• slop
• slops
• slough
• swill
• trash
• truck
• unwashed
• vermin
• waste