From Longman Dictionary of Contemporary Englishlumpenlum‧pen /ˈlʌmpən, ˈlʊm-/ adjective 1 relating to the poorest and least educated people from the working class2 large, heavy, and lumpy Her body felt lumpen and awkward.
Examples from the Corpus
lumpen• These were the days when rock was being shooed out in disgrace, a lumpen confusion of scratched armpits and muddled motives.• The individuality and richness of their lives - given a glance of a chance - mocked such lumpen labels.• Both families had been transformed from what might be called a lumpen peasantry into what Marx did call the lumpen proletariat.Origin lumpen (1900-2000) lumpenproletariat “lowest part of the population” ((20-21 centuries)), from German, from lump “dirty untidy person” + proletariat “proletariat” 