- proletarian, propertyless - the lowest class of citizens of ancient Rome who had no property
- propertyless, wage-earning, working-class, blue-collar - of those who work for wages especially manual or industrial laborers; "party of the propertyless proletariat"- G.B.Shaw
Antonym: middle-class (indirect, via upper-class, lower-class)
Antonym: upper-class (indirect, via lower-class, middle-class)