Merriam-Webster Collegiate Dictionary - lumpen

 I. adjective  Etymology: German Lumpenproletariat degraded section of the proletariat, from Lump contemptible person (from Lumpen rags) + Proletariat  Date: 1936  1. of or relating to dispossessed and uprooted individuals cut off from the economic and social class with which they might normally be identified ~ proletariat ~ intellectuals  2. plebeian 2  II. noun  (plural ~; also ~s)  Date: 1941 a member of the crude and uneducated lowest class of society