riffraff

/ˈrɪfˌræf/
noun
  1. People who are considered to be of low social class or bad character; the undesirable or disreputable part of society.
    • Some people in the town looked down on the carnival workers as mere riffraff.
    • The old innkeeper refused to serve what he called 'riffraff' after dark.
    • The wealthy residents complained that the new park was attracting riffraff from other neighborhoods.
Synonyms
What does "riffraff" mean? | whatsthatwordmean | whatsthatwordmean