отребье

Etymology
Associated with. The presence of ⟨ре⟩ instead of ⟨ере⟩ is associated with the late loss of the pre-stressed vowel, or is associated with Old Novgorod or Old Pskov liquid metathesis.

Noun

 * 1)  scum, worthless remnants, waste, rabble, refuse
 * 2)  the dregs of society, morally debased or criminal elements